First, the particle size and its representation In the sieving process, the materials to be processed are scattered material groups of different sizes and shapes. To understand the particle size characteristics of such materials, it is necessary to clarify the concept of particle size and the meth
Read moreThis method was developed by Changchun Institute of gold cyanide-containing waste water purification new technology, has been national patent (ZL 91104787.5). It has been successfully applied to the Dongyaoyu gold mine in Qianxi, Hebei Province, and has low treatment cost, comprehensive recovery of
Read moreThe chemical reaction rate v k and the diffusion mass transfer rate v D vary according to their own laws. For heap leaching, after a period of leaching, it is possible to achieve v k and v D equal, then the rate v of the heap leaching process can be expressed as follows: Or k D (C 0 -C i )=k k C&q
Read moreIn the first six months after the calciner was put into production, it was calcined under conditions of excess air ( from 50% to 100%) . Â The resulting calcine is bright red. The gold recovery from this calcination is not high during the cyanidation process. The roasting method was later chan
Read morePurple Mountain Handan Steel Group Co., Ltd., formerly known as coke kilns Yongnian County coal mine, a local state-owned enterprises in the county, there is a annual output of 300,000 tons of raw coal mine, a total installed capacity of 24,000 kilowatts of pit coal gangue power plant , an electric
Read moreFirst, iron concentrate reverse flotation desulfurization. The harmful impurity sulfur in iron concentrate is generally in the form of pyrite and pyrrhotite. The sulfur in the form of pyrite can be removed by flotation or magnetic separation of xanthate, and pyrrhotite Sulfur in the form is diffic
Read moreIn the flotation, the inhibitory mechanism of the inhibitor is mainly: 1. Forming a hydrophilic film on the surface of the ore particles to achieve the purpose of inhibition   The inhibitory effect of other heavy chromate lead ore is converted to weakly alkaline pulp as chromate, and then
Read moreNickel electrowinning anode sludge separated in the base metals and sulfur, platinum group metals platinum enrichment process outputs concentrate. Before the 1970s, the nickel refining method was crude nickel electrolytic refining or nickel sulfide electrolytic refining. In the electrolytic refinin
Read more(February 13, 1982, promulgated by the State Council, implemented on July 1, 1982) Article 1 In order to supervise the implementation of the Mine Safety Regulations by mining enterprises, institutions and their competent authorities, the State implements a mine safety supervision system and sets u
Read moreOre grade number refers to certain metals useful components contained in the ore, generally expressed as a percentage (%). Some use gram per ton or cubic meter of ore expressed in grams per gram (g / ton), (g / m3 ). Such as the grade of gold ore, the gold ore is expressed in grams / ton, sand gold
Read moreLithium salt lake sedimentary deposits are an important source of lithium in the United States, Chile, the Soviet Union, our country and Bolivia, these resources are very rich. The extraction of lithium from the deposited lithium deposit is by chemical or chemical-flotation combination. As early a
Read moreThe center discharge type 900/160 gyratory crusher shown in Fig. 1 is composed of a frame, a working mechanism, a discharge port adjusting device, a transmission mechanism, a safety device, a dustproof device and a lubrication system. 1. The frame is composed of a base 14, a fixed cone (i.e., a mi
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