IV. Approval requirements 1. The following items will not be approved: ( 1 ) individual gold mining; ( 2 ) backward production capacity, technology and national industrial policies that are explicitly eliminated by the state; ( 3 ) no development of gold mineral qualifications (4) prospecting and m

Iron is an impurity element hydrometallurgical the most commonly encountered. Its abundance in nature and its chemistry with many elements of the periodic table (such as Ca and Mg in the second main group element and the first transition element Ti, V, Cr, Mn, Co, Ni, Cu) The similarity makes it of

First   Each stope must have two safety exits, and connect the upper and lower roadways. The sidewalks should be located outside the veins. The support of the safety exits must be fastened and the ladders must be provided. If there are two exits due to special circumstances, it must be Approved

For pickling steel, rust removal, green 矾 It uses some of the steel surface and the use of steel mills electroplating factory units often iron rust, the rust of the steel strip immersed in the waste acid, the spent acid because sulfuric acid process titanium production Erysiphe generated, whi

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First, safety production investment Mining companies must arrange for appropriate funding for improving the safety, security update technology and equipment, equipment, instruments, meters and other safety production inputs, in order to ensure that enterprises achieve laws, regulations, rules and

In the process of molybdenum ore beneficiation , some processes produce a low-grade molybdenum ore that is difficult to recover by flotation; some have too high levels of impurities to obtain qualified molybdenum concentrates (or low-grade molybdenum concentrates). The use of these unqualified moly

The reporter learned from the China Xinbao Jiangsu Branch (hereinafter referred to as Jiangsu Xinbao) that in the first three months of this year, Jiangsu Xinbao cumulatively supported the province’s foreign trade exports by US$6.32 billion, an increase of 31.9% year-on-year, exceed

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"Made in China" is still in the development stage of "big but not strong." The author believes that "Made in China 2025" can make China from the manufacturing powerhouse to the strong state-owned enterprise. At present, our country needs a stronger strategy o

Recently, six sets of 15KN explosion-proof electric anchors developed by Jiangsu Jinshun Anchor Machine Co., Ltd. were delivered off the assembly line. The traction machine traction force is 15KN, and the explosion-proof level is d‖BT4. The product can be widely used for anchoring, mooring an

Description: The Selebi nickel mine is located 500 kilometers north of Gabarone, Botswana in southern Africa. It is an underground mine divided into a large one and a small mine: the large mine Selebi-Phikwe and the small mine Selebi-North. The nickel ore produced is smelted by a nearby smelter. Ac