why aluminium 2 copper and zinc are magnetic

Construction Waste Crusher

Construction waste refers to the construction, construction units or individuals to construct, lay or demolish all kinds of buildings, structures and pipe networks, etc., and generate the spoil, spoil, waste, residual mud and other wastes generated during the repairing process.

Quarry crusher

Common quarry crusher varieties hammer crusher, heavy hammer crusher, jaw crusher, impact crusher, cone crusher, gyratory crusher, sand making machine, milling machine, the user can be broken Material hardness, large feed size, and finished product size

Gold Ore Crusher

Gold ore types are divided into: gold ore, gold-bearing quartz vein ore, silver rich ore, oxide gold ore, iron sulfide sulfide, copper sulfide sulfide gold, arsenic sulfide gold, antimony sulfide Gold mines

Sand Making Machine

Sand making machine, a class of main machinery and equipment necessary for the production of gravel aggregate, according to the sand making process and handling capacity of the different, can be divided into many types

Portable Crusher Plant

Portable crusher plant mainly by the feeder, box crusher, shaker, conveyor, frame tires, power distribution cabinets and other component

Mobile Crusher

Simple mobile crushing station is a simple version of mobile crushing station, mainly for metallurgy, chemicals, building materials, utilities and other often need to move the material processing operations

Raymond mill

Raymond mill is mainly used for barite, calcite, potash feldspar, talc, marble, limestone, dolomite, fluorite, lime, activated clay, activated carbon, bentonite, kaolin, cement, phosphate rock, gypsum, glass

Vibrating Feeder

Vibrating feeder in the production process, the lumps, granular materials from the storage silos in a uniform, timed, continuous to the receiving device to go in the gravel production line for crushing machinery continuous feeding

Sand Washing Machine

Sand washing machine is artificial sand (including natural sand) washing equipment. Sand washing machine is widely used in sandstone field, mining, building materials, transportation, chemical industry

Vertical Roller Mill

Raw material vertical roller mill is my company with years of various grinding mill production experience, extensive domestic and international lessons learned ultrafine grinding, design and development of advanced grinding equipment.

Ore Milling Equipment

Ore Milling Equipment is a key equipment for pulverizing non-metallic ore materials such as limestone, calcite, dolomite, talc, gypsum, quartzite and potash feldspar, and has the advantages of large output

Ultrafine Mill

According to the principle of material layer grinding, the LUM series of vertical ultrafine mill materials have short residence time in the grinding mill and less repeated grinding, so the iron content in the product is very small and the whiteness and purity of the product are high.

Aluminum and copper -- Galvanic corrosion | Physics Forums

Jun 18, 2019· 2. It is the copper that corrodes the aluminum, and in the process, both the clamp and wires corrode at the connection; 3. When copper to aluminum wire connections are unavoidable, use as large a mass as possible of an aluminum bolted clamp; and 4. Install the aluminum above the copper, to prevent the copper 'salts' from 'dripping' onto ...