Q:Can we import scrap tanks and other scrap metals from Russia?

Imports of scrap metals, as long as there is no safety problems (radiation, biological safety, etc.), can be from any country, of course, the premise is the cost of the economy. Because the current domestic steel overcapacity, iron and steel prices can not be lower, and even some steel prices lower than the cost price (major steel mills low price struggle against the vicious results of the market). So be sure not to import more than new domestic steel.

Q:What is the sign of PD? What are the signs of other precious metals?

Palladium (Pd), one of the platinum group metals, is also one of the precious metals commonly used in jewelry making. It belongs to platinum group metals with platinum (Pt), and has a high reflectivity to visible light. Therefore, it appears white and has a similar appearance and color:Platinum --- tin white palladium --- steel white

Q:Other kinds of metals in K gold

Yellow series of K gold jewelry (referred to as K yellow), is gold and silver, copper alloy, according to the content of gold can be made into different K number of K gold series of jewelry, mainly 22K, 18K, 14K, 10K and 8K. Asians love the high K number of K gold jewelry, such as 22K and 18K, Europe and the United States like 14 K gold and 10K gold jewelry. The color of the Yellow K gold series jewelry is related to the gold content of K gold and the proportion of silver and copper. 18K gold color than 14K, 10K gold jewelry color yellow, and the same K number of gold jewelry, if silver is more than copper, yellow is shallow, if copper is more than silver, yellow is deep.

Q:Why can't aluminum and other metals be heated in an electromagnetic oven?

There are mainly two parts in the induction cooker: the electronic circuit and the structural package.The electronic circuit parts include power board, main board, lamp board, coil plate and heat sensitive bracket, fan motor and so on.The structural part of the packaging include: porcelain, plastic cover, fan blade, fan bracket, power line, power operation manual, stickers, film, certificate, plastic bags, foam, shockproof box, bar code, cartoon box.According to the principle of operation, iron cookers must be used.

Q:What are light metals and what are heavy metals?

The element classification, some of them belong to the rare earth metal, some classified refractory metals, eventually in the industry really into heavy metals into 10 kinds of metal elements: copper, lead, zinc, tin, nickel, cobalt, antimony, mercury, cadmium and bismuth. These 10 kinds of heavy metals in general and with metal density greater than 4.5 outside, no other heavy metals in common. Each of the properties of various heavy metals.

Q:What does "productive scrap metal recycling" mean?

Productive scrap metal recycling refers to the recycling of metal materials and metal products used in construction, railways, communications, power, water conservancy, oil fields, national defense and other production areas, and has lost its original use value.

Q:How to extract noble metals from waste electronic products

Advantages and disadvantages of noble metal extraction by flame metallurgy process:Although the technology of extracting noble metals by means of metallurgy has many advantages, such as simplicity, convenience and high recovery rate, there are many disadvantages:1. Burning adhesives and other organic substances on printed circuit boards will produce a large amount of harmful gas and cause two pollution;2, a large number of scum emissions increased by two times solid waste, and at the same time, residue in the residue of some useful metal industry was discarded together; 3, this method can only recover some precious metals, other non-ferrous metals recovery rate is low;4, energy consumption, processing equipment expensive, economic benefits are not high.

Q:Will the metal ions in the layered composite metal oxides be replaced by other ions?

Are generally ionic compounds, namely active metal loses electrons form positively charged cations, and non metal electronic form negatively charged anions, cations and anions by electrostatic interaction to form ionic compounds.

Q:What metal has the fastest heating?

Silver is the best transmission media, but very soft and can be made of high-grade thermal grease, and ranked third in the gold also has a good conductivity, but very expensive, so the copper is a good thermal conductivity of metal.

Q:Is the acquisition of scrap metals controlled by the police? Any other takeover of the police?

It is regulated. Other waste products are generally unregulated.