pcb recycling/e-waste - mt baker mining and metals

pcb recycling/e-waste - mt baker mining and metals

A stark difference in gold ore vs. printed circuit boards (PCBs) is that a rich gold ore might have 0.5 1.0 oz of gold per ton of ore, but computer PCBs contain 3 8+ oz gold, 15 20+ oz silver, 500+ lbs copper per ton of boards, plus multiple other base and precious metals. Given the commodity nature of electronics such as computers and cell phones, this makes PCB recycling a great way to minimize waste while turning a profit. By following the principles of separating gold from hard rock ore, we developed a system to mechanically separate the waste plastics and glass fibers from the valuable metallic content: no burning, leaching or electrolysis.

Hammer mill Using the screen with holes, this machine breaks up the components to <1/8 pieces, and discharges them onto the shaker table to separate the larger metal from the board material. Using the screen with slots, the board material is pulverized to liberate the metals from the plastics and fiber Shaker table This separates materials based on density (specific gravity). The metals in PCBs are all higher density than the waste material, so behave differently on the table, allowing density separation of metals and plastic/fiber waste.

We have developed a processor built around our hammer mill and shaker table to completely pulverize the printed circuit board (PCB) and components to liberate the precious metals and base metals from the plastics and fibers. For e-waste and PCB recycling, this is a fantastic turn-key solution.

We have developed a processor built around our hammer mill and shaker table to completely pulverize the printed circuit board (PCB) and components to liberate the precious metals and base metals from the plastics and fibers. For e-waste and PCB recycling, this is a fantastic turn-key solution.

We bought a turn-key ore processing system that included a hammer mill. The equipment did exactly what it was promoted to do and more. The combination of the jaw crusher with the hammer mill and shaker table did has good if not better than it was advertised by MBMM. I Read More

We have an MBMM 24 x 16 HD turnkey-scrap metal processor. We primarily process 6-8lb motor stators, smaller transformers and radiator ends to separate out the clean copper. We run this hard day after day and are very happy with how it performs and the on-going support from MBMM. This Read More

As a countertop fabricator, stone waste from the edges of the slabs is a constant headache and expense to deal with. We dispose of 5,000 lbs of cut-offs a day and the dumpster fees for disposal was getting out of hand. We purchased a crusher system from MBMM and have Read More

This customer reports they process mostlyPC boards populated with components and sell the concentrated mix of copper, base metals and precious metals to a copper refinery in Poland. Read More

The crusher (16 x 24 Jaw Crusher Module) is great! I probably have 300 hours on it and we are in the process of swapping around jaw plates. I am very impressed with your product and would have no hesitation in recommending you guys. Read More

which copper wire is best for you, solid or stranded?

which copper wire is best for you, solid or stranded?

We all know that solid and stranded copper wire are two of the most important wires used for electronics, and each type of wire has its own advantages and disadvantages. As for which wire will you choose, it is largely determined by your special needs. In order to help the customers choose the most suitable wire, we are the professional manufacturer of copper cable granulator and wire stripping machine, will compare the two different wires for you.

Uses In most cases, stranded wire is used in the situations where need a great deal of flexibility, while solid wire should be used when strength and rigidity is required. So, stranded wire is mostly applied in the circuit board connections, connection areas around moving joints and audio headphones, and solid wire is largely used in coils, magnet wiring and electric motors.

Flexibility Seen from the above uses, stranded copper wire has good flexibility, while solid copper wire can only be used in the situations where require little movement. Besides the fact that stranded copper wire is much more flexible than solid wire, it has a much larger range of motion.

Impedance It is widely known that the frequency of the current determines the type of wire that should be used. When currents travel through the wires, the current that travels through the outer layer tend to be lost into the air, which makes solid wire a better choice due to its decreased surface area. However, it is also a fact that several stranded wires have also been designed for higher frequencies, insulating each single wire in the bunch, which greatly reduced the impedance.

Weaknesses Stranded wire needs to be used in the controlled atmosphere for it can be corroded easily. Because of the decreased surface area, solid wire is more resistant to corrosion, weathering and atmospheric exposure.

According to the above comparisons, we believe that you are able to choose the suitable wire type. Besides, in order to earn more money and save resources, We strongly recommend our wire stripping machine and copper cable granulator to recycle your scrap copper wires.

electrowinning of copper barrel-electrolyses - binq mining

electrowinning of copper barrel-electrolyses - binq mining

cathode (negative electrode) of an electrolysis cell through which a direct Copper is an excellent conductor of electricity and is therefore basic to such items as placed in bulk in a barrel, which takes the place of the cathode and is rotated in

I get many requests on how to use and make an electrolysis tank. Then take some more copper wire and attatch this to the part being worked on, drape I unplugged the charger, and removed the barrel jacket from the tank.

His 'general law of electrolysis' can be expressed mathematically as the equation : Note that, in order to plate 25 m of copper, one needs to apply amps .. the hole 'barrel' cannot be directly electroplated because the outer conductor

Rust reduction via electrolysis is almost harder to say than it is to set up. a plastic 55 gallon barrel, anything that will hold the rusty utensil will work. 3. Use copper wire and more clamps if you need to completely submerge your piece.

The electrolysis process supplies electrons to hydrogen ions in water, The tin in brass will etch out of the surface and leave brass looking like copper. .. D&B Farm and Home Supply in Lewiston sells used apple juice barrels for about

The manner in which artifacts are set up for electrolysis is dependent upon the This eliminates the two brass anode bars and the copper suspension wires, which .. Three hooped barrel cannons processed together in one vat required 480

Cupreous metal (copper, bronze, brass) conservation Electrolytic reduction, also called electrolysis, is an electrochemical reaction .. PVC plastic pipes with sealed ends make excellent vats for long, slim artifacts, such as rifle barrels.

Electrowinning is an electrolytic technology used to recover . 3 Copper. 3 Cadmium. 3 Zinc. Helpful Hint. The electrowinning unit should be operated 24 hours CYANIDE. PLATING. RINSE. NO. 2. CADMIUM. BARREL. PLATING. SPRAY

(a) the mass of a substance liberated in electrolysis is proportional to the quantity of There are some limitations in barrel plating, the tumbling action which is copper wire formed into suitable shape for holding the workpiece and passing

Before and after electrolysis certain procedures should be performed to .. mild steel 55-gallon barrels, cut in half lengthwise, make readily available cheap vats. type separation 2, 300-V maximum rating insulated copper wire can be used.

This report is the result of an investigation of water electrolysis for hydrogen .. production cost was found to be US/kg equivalent to 34 $/barrel crude oil .. This device was made of alternating disks of zinc and copper with each pair

classic h62 in brass - eb castworld

classic h62 in brass - eb castworld

Leading supplier of high alloy castings and forgings. There are 4 companies with sales of more than 100 million yuan, across the 4 major areas of wear resistance, heat resistance, corrosion resistance, and machinery

The density of brass H62 is 8.43 g/cm3. Brass h62 conductivity can reach more than 98%. Tensile strength: (b/MPa) 410-630 The tensile strength of brass h62 drawn bar (semi-hard state) is: 370MPa (diameter 5-40mm); elongation 10=15% 5=18% 335MPa (diameter >40~80mm); elongation 10=20% 5=24% Elongation: (10/%) 10 Vickers hardness: (HV) 105-175 (thickness 0.3)

building a parabolic solar hot-water heater using 123d : 10 steps (with pictures) - instructables

building a parabolic solar hot-water heater using 123d : 10 steps (with pictures) - instructables

Once I had the set of points, I used 123D to make the 3 dimensional shape. 123D is afree, easy to learn CAD software available from Autodesk. http://www.123dapp.com/123d In 123D, I created a sketch and entered the coordinates of my points one at a time. Then I connected them with a spline. This is the curve that defines the inner surface of the dish. I added some more lines to complete the cross-section of the dish, then revolved it 360 degrees about the center line.

From 123D, I exported my dish as an STL file and imported that into 123D Make. This is another free software from Autodesk that you can download athttp://www.123dapp.com/makeor the Apple Mac-App-Store. 123D Make lets you turn your 3d shape into a lattice of 2d profiles that you can cut out and fit together. After importing my shape, scaled it to the biggest size I could make on my laser cutter and I chose a radial slicing pattern. I chose the slice direction from the dish's center outwards (like spokes) and upwards like rings. 123D Make automatically calculates the profiles I needed for the lattice and adds slots so that every piece slides into the correct place. I started by making an 11-inch diameter dish out of cardboard as a prototype, then did a 36" diameter dish out of .25" plywood. 123D Make's nesting algorithm wastes material by putting too few segments on a given sheet. I wanted to lay out the pattern to use the most of my material, so after generating the laser sheets, I consolidated them in CorelDraw. For the 36" dish, I had to cut the biggest rings in separate pieces, so I split them in CorelDraw before cutting. (Looking back, I would have made the pieces of the ring interlock like a puzzle, adding more rigidity.)

I cut the parts on a 120W 24x36 Epilog laser. For the 36" dish parts, it took about 3 hours to get everything cut out of .25" plywood. It's very important that your wood is perfectly flat on the cutting bed, otherwise the laser won't be focused correctly and won't cut well. I used tape to help hold mine flat, but keep flatness in mind when buying your material. Once everything was cut, it was time for assembly. 123D-Make does a neat animation of how your dish can be assembled. For this job, I used a bit of hot glue to hold the first three supports in place, but after that, no glue was needed. There was enough friction that the dish held itself together perfectly.

Now that I had the wooden lattice, I needed a smooth, continuous surface to serve as the inside of the dish. I did this using a layer of masking tape, then several layers of spackle. The first layer of spackle filled in the depressions in the tape. The later layers I used a pre-cut wooden form, rotating it around to spread the spackle evenly to the correct curvature. I used a laser-cut piece of wood glued to a piece of sand paper to sand the surface to the correct curvature. Once the spackle had the smooth, curved surface that I was looking for, I sealed the surface with three coats of clear acrylic paint. I considered epoxy and polyurethane, but decided on acrylic since it was the least toxic and had the lowest environmental impact.

My next step was to add an adhesive-backed mylar film to the surface of the dish. I got mine online from Green Power Science(who also have some great youtube videos about making solar parabolas). You can probably get the same stuff elsewhere for less money, but I knew that this stuff would work. I was able to do my large dish with strips cut from one 24"x36" roll. I used a knife and a straight edge to cut strips about 1" wide. Thenlaidthem down, starting with a strip across the center and working up to the left and the right. At the end, I trimmed off the extra around the rim and it was ready for the first test.

To test the parabola's performance, I brought it outside, pointed it at the sun, and lit things on fire. I wanted to figure out how small of an area the dish was able to focus the light. Wearing dark welding goggles, I held a piece of wood at the focal point (about 10 inches above the center) and could get the light to concentrate on a circle about 2 inches in diameter! That means I'm getting over 250 times the power of the ambient sunlight! Next, we tried roasting marshmallows. Unfortunately, they hardly cooked at all. They were so white that they reflected all the light that hit them. When we rubbed some black charcoal on one and it started charring instantly when we put it in the beam. On a Safety note, always store your mirror covered or out of the sun so it will not burn your house down. Try not to leave your mirror unattended in a sunny spot.

The next step is to add the boiler. I decided to use a coil of copper pipe for my boiler, so it would function like an on-demand hot-water tap. I used 5 feet of 1/4 inch tubing. I coiled it myself without any proper pipe-bending tools. I used salt to fill the tube so it wouldn't crush and I coiled it around a series of smaller and smaller cylindrical objects until I got to the diameter I wanted. Check out my instructable on bending copper tubing. After completing the coil, I mounted it to a piece of scrap pipe going through the center. The diameter pipe is about 1/2 an inch smaller than the inner diameter of the coil. I filled the empty space with spackle, which will function as insulation for the inside of the coil. Finally, I painted the coil with a coating of black stove-paint. It's paint that's designed to handle high temperatures and it's very important. Without it, the coil would just reflect most of the energy we are beaming at it. I drilled a whole through the center of the parabola and mounted a piece of pipe that will hold the boiler using some laser-cut disks of wood. Two plastic hoses come up through the center to run water to and from the boiler. There's a needle valve to regulate the water flow.

I think if you winded the pipe between 2 metal plates (so that the pipe looks like a plate) or around a cone you would have had larger area of the pipe exposed to the sun rays and better heating coefficient. Well done!

Very good. I have a satellite dish plate, old and unused. Can I use this your idea? I would like to see the video that you made, this time as this video is private. You can show me working? I could use the mirror in place of foil, what do you think of the idea?

Indeed you could! Using satellite dishes as a parabolic reflector is common practice in creating high powered home built lights! The benefit is you have the backing of a million dollar fabrication method to ensure a more perfect surface - with his masking tape technique the efficiency of his design is unfortunately a lot less than the conceptual model on his computer.

covering the coil with glass would help it retain heat,block wind. Adding some thermal mass around the coil would allow it to store a bit of heat, for passing clouds and the like. If you were to put the coil into a block of concrete say inside a mason jar,using a black pigment to color the concrete I think you would get a more even heating of your water. Good luck with the application,it was a nice instructable.

re tracking: I remember an article fom Mother Earth News from back in the 70's tsome one had a dish he wanted to track the sun.. they had two ram actuators, plumbed to two flat black reservoirs. the reservoirs were mounted to rotate with the dish. the one on right had baffle shading it from sun rays from left, but could be warmerd by sun rays from right. similarly, the one on left was baffled to be shaded from right and warmed by sun rays from left. the reservoir on right was plumbed to actautor that extended to turn dish and reservoirs to right, and reservoir on left plumbed to actuator to extend to turn dish to left. thus when sun is to tp right of dish, iit warms reservoir on right and not the left, causing dish to rotate toward sun .dish stops when both reservoirs are warmed equally, and dish is pointing at sun. as sun moves, heating is unbalanced again, anf reultant difference in reservoir temps changes volume of fluids in each system, to cause actuators to work to rotate dish back into alifhnment with sun.... no electricity required.

How come you did not simply use a discarded satellite antenna for this project? Would have saved a ton of time and calculations. The receivers are already mounted at the focus point and the bracket is already made to the correct length.

This was going to be my question. Be really cool to get one of the big old ones that had a diameter closer to what your data showed you needed, then swap out the copper coil for a magnifying glass and make a death ray!

I had an experience like you bt the biggest problem was the sun movement as you know after minuts you have to change the dish location .do you have any solution for this problem? Id like to know your idea .thanks

analysis of the wear failure of cone crusher liner at copper mine

analysis of the wear failure of cone crusher liner at copper mine

In view of the work conditions of Copper Mine, the analysis of the wear failure of the cone crusher was made. SEM analysis showed that drilling, cutting and squeezing (impacting) of ore which resulted in pits were the dominating wear means and the fatigue spalling caused by low-frequency fatigue was one of the wear failure means. Therefore, the liner materials should be required to have both very high surface to resist the drilling and cutting of ore and very high strength and toughness to resist low-frequency fatigue and impact load. So, high manganese steel alloying was selected to increase the preliminary hardness and work hardening rate of the liner. Meanwhile, the improvement of metallurgy foundry and heat treatment qualities of high manganese steel was also a factor that couldnt be ignored.

Our customer, Dexing copper mine, which is the largest copper mine in Asia. It has more than 30 sets cone crushers, so need a large number of cone crusher wear parts every year. It has many crusher wear parts suppliers, however, the quality of these parts is not stable. Therefore, our foundry had helped it to find the wear failure of cone crusher liners and improve its span life.

The ore in the Dexing Copper Mine can be divided into porphyry and phyllite-type ore according to the type of ore body rock. The ratio of ore volume is 1: 3. In the mining area, there are three industrial types of oxidized ore, mixed ore, and primary sulfide ore. The sulfide ore is the main type and accounts for more than 99% of the mass. The hardness of Dexing copper ore is generally between f = 5-8, which belongs to medium-hard ore. The average compressive strength of the phyllite type ore is 84.8 MPa, and the average compressive strength of the granodiorite-type ore is 109.2 MPa.

The key step of wear failure analysis is to analyze the morphology of the wear surface, so the sample must be taken from the fresh wear surface of the wear debris. The moving cone (liner) we sampled was just removed from the cone crusher and shipped back in time. The broken cone crusher liner is cut into large samples by oxygen-acetylene flame, and 4 samples are taken from top to bottom. The size of the sample should be such that the sampling site is not affected by heat. Then, through the wire cutting process, take out the sample at the center of the large sample for scanning electron microscope to observe the wear morphology. The size of the sample is about 10 mm 10 mm 10 mm, and one sample is taken to measure the change in microhardness from the surface inward. Observation of the specimen was performed on an S-2700 scanning electron microscope. Before observation by the electron microscope, the samples were cleaned with ultrasonic waves.

The three-body abrasive wear is formed between the cone crusher mantle, cone crusher concave and the ground ore, and the surface of the liner is in a complex stress state. Under the action of huge spring compressive stress, the ore generates huge compressive stress on the local surface of the lining plate, and at the same time, the moving cone generates high shear stress at the same time. The two acts at the same time, which causes chiseling, cutting and extrusion of the lining plate.

From the first picture Wear Morphology After Cone Crusher Liners Failure x100, The cone-crushing motorized lining plate performs an eccentric rotation motion. When it is deflected to the fixed lining plate, it will give a huge impact load to the broken ore, causing the lining plate to be squeezed and plastically deformed. In the case of repeated repeated plastic deformation, the liner forms numerous squeeze (impact) pits, check the Wear Morphology After Cone Crusher Liners Failure x500.

At the same time, the ore-bearing the huge load will subject the lining plate to compression stress and shear stress. The compression stress causes plastic deformation of the moving liner. In the case of repeated repeated plastic deformation, numerous squeezing (impact) pits are formed on the surface of the liner, like the following Squeeze (impact) pits on the wearing surface of the cone crusher liner pictures. At the same time, at the bottom of the extrusion pit, after repeated extrusion, deformation strengthening occurs and plasticity is exhausted to form a brittle fracture. Its appearance Morphology of brittle fracture at the bottom of the pit

Further observations revealed that the ore squeezed the surface of the liner under the effect of huge crushing stress. Because the ore has a low Platts hardness f value, the f value actually reflects the compressive strength of the ore, f=R/100, R means Compressive strength. Therefore, the compressive strength of the ore is low, the breaking strength is also low, and it is easy to break. After the ore breaks, it is squeezed to the bottom of the pit due to the lower hardness of the lining, see the following picture:

At the same time, as the moving cone rotates, shear stress is generated between the ore and the liner. The sliding ore and the ore squeezed at the bottom of the pit cut and cut the surface of the lining.

Therefore, in the actual operation of the cone crusher lining, there are simultaneously cutting, cutting and pressing (impact) pits Various forms of wear. As for the proportion of the three types of wear, it is not only related to the force and size of the ore, but also to the value of the Platts hardness f that reflects the compressive strength of the ore.

It should be pointed out that the cone crusher has a large crushing force and a high rotation speed. Under the action of huge compression and shear pressure, the lining board is subjected to periodic contact fatigue loads. Fatigue cracks can easily occur on the subsurface layer, resulting in fatigue spalling. Flaking is also one of the failure factors of the wear of the crusher liner.

In summary, the wear mechanism of the cone crusher lining is the coexistence of cutting wear, plastic wear and fatigue wear. With the different working conditions, especially the different F value of the hardness of the ore, the proportions of the three wear mechanisms are different.

Because the material of the sampled cone crusher liner (lining plate) is high manganese steel, the lining plate is subjected to a huge impact load during the operation of the cone crusher, so that it has a good work hardening effect.

It can be seen from the table test results that the cone crusher liner is subjected to a huge impact load in the crushed ore. The hardness Hv of the liner surface can be as high as 500 or more, but the hardening depth is only within 2 mm. Therefore, the liner is required to have good toughness and sufficient strength to resist the huge impact load and cause chipping. The surface hardening values of different parts of the same lining board are different, which shows that different parts of the lining board have different stresses and different sizes of ore. The upper part of the moving lining board is impacted by a large ore, so the hardening value is the highest; while in the lower part of the moving lining board, the ore has been broken, and its surface hardening value is low.

According to the above analysis of wear morphology and wear mechanism, the cone crusher lining not only requires high surface hardness to resist ore chiseling and cutting but also requires high strength and toughness to improve resistance to huge impact loads and Low cycle fatigue ability, will not break and break. Therefore, the basic requirement for the material selection of the cone crusher liner is to increase the surface hardness as much as possible and to improve its resistance to cutting wear while ensuring that the liner does not crack. Due to the high plasticity and toughness of high manganese steel, and the unmatched high work hardening ability of other wear-resistant materials, high manganese steel is still the material of choice for cone crusher linings. However, as the power of the crusher continues to increase, the crushing ratio increases and the ore grade continues to decrease, especially the Dexing Copper Mine is a lean ore, and it is generally difficult for high manganese steel to meet production requirements. Therefore, it is necessary to increase the initial hardness of the high-manganese steel and increase its work hardening rate under the premise of better exerting the inherent characteristics of the high-manganese steel and ensuring that the high-manganese steel has proper plasticity and toughness. Based on this, based on the composition of ordinary high manganese steel, we consider alloying treatment to improve the strength and hardness of high manganese steel and evenly distribute a considerable number of high hardness mass points on the basis of austenite to improve the worn form of the liner, Slow down the rate of wear. However, the addition of alloying elements to high-manganese steels is beneficial to the improvement of strength and hardness, but it will inevitably lead to the reduction of plasticity and toughness. Therefore, the amount of alloying elements must be added in order to avoid excessive reduction of plasticity and toughness and lead to fragmentation. So our foundry suggest using CrMoVTiRe manganese steel to cast their cone crusher liners,

The test results show that the initial hardness of CrMoV TiRe high manganese steel can reach about HB 260, which is conducive to improving the resistance to cutting wear. However, the addition of alloying elements, especially the addition of carbide-forming elements, will inevitably lead to an increase in the number of undissolved carbides, which will reduce the plasticity and toughness to a certain extent compared with ordinary high-manganese steels. While attaching importance to the alloying of high-manganese steels, we must not neglect the improvement of metallurgical quality, especially reducing the amount of phosphorus and inclusions. This is an economical and convenient way to improve the service life of high-manganese steel linings. During water toughness treatment, heat treatment process parameters such as water toughness treatment temperature, water inlet and outlet time, and water temperature should be strictly controlled so that the amount of undissolved carbides and precipitated carbides is controlled within the range prescribed by national standards.

It should be pointed out that while paying attention to the material of the cone crusher liner, the formulation of the casting process should not be ignored. The wall thickness of the cone crusher lining is large, and the maximum wall thickness of the fine crushed lining can reach 200 mm.If ordinary sand casting is used, the cooling rate is slower, and the casting temperature is not strictly controlled. Coarse. Due to the coarse grains, only one grain is observed when zoomed in to 100 times, so it is only zoomed in to 50 times, so it cannot be evaluated according to the national standard of GB6394. Grain refinement will help to increase the service life of the liner. Therefore, in the casting process, it is recommended to use metal mold sand and reduce the pouring temperature, which will help refine the grain of high manganese steel lining plate.

Qiming Machinery is the leading manganese steel, chromium steel, alloy steel, and heat-resisting steel manufacturer in China. We manufacture crusher wear parts, shredder wear parts, mill liners, apron feeder pans, and other wear parts for customers.

Get in Touch with Mechanic
Related Products
Recent Posts
  1. high productivity hammer crusher ore rajasthan

  2. hammermill med shool

  3. china new arrival ore processing small hammer crusher

  4. hammer crusher khrushchev

  5. hammer mill drawings and specifications

  6. high end new granite hammer crusher manufacturer in arusa

  7. hammer mill gold ore processing

  8. hammer mill for gold manufacturer in australia

  9. hammer head for limestone crusher

  10. gold ore hammer mill cross section diagram

  11. konstruksi sistem cara kerjanya mesin pulverizer

  12. odessa economic large salt stone crusher

  13. iron ore spiral classifier in indonesia

  14. gold washing plant for sale prices

  15. machinery for quartz sand crushing in nigeria

  16. effects of grinding crusher in pakistan

  17. large rock briquetting machine in los angeles

  18. slag crusher belgium

  19. ultimate rock crusher in san diego california

  20. japan small bentonite dryer machine sell