Improved chemical for increasing flotation target of powellite ore and its preparing method

An ore and index technology, applied in the field of inorganic regulator preparation, can solve the problems of poor water glass selectivity, troublesome solid-liquid separation, high dispersion of ore pulp, etc. Effect

Inactive Publication Date: 2007-10-03
青海西部矿业科技有限公司
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AI Technical Summary

Problems solved by technology

[0003] Water glass is a cheap flotation agent that has been used for a long time. It is widely used in the suppression of silicate minerals. However, due to its poor selectivity, water glass has a high dosage, and its strong alkalinity causes a high degree of dispersion of the pulp. Solid-liquid separation causes a lot of trouble

Method used

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Examples

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preparation example Construction

[0014] The preparation method of the medicament is to add the prepared sulfuric acid solution in proportion to the purpose water glass solution prepared in proportion according to the above formula content, and keep stirring the mixed solution, and then stir after adding the sulfuric acid solution. It is sufficient that no gel is formed within a few minutes, and the prepared modified inorganic agent can be directly added to the beneficiation of rough concentrates of ores such as molybdenum.

[0015] The use method of the inorganic regulator for improving the sorting index of molybdenum-tungsten ore and the modified water glass is to directly add the mixed aqueous solution prepared in the above-mentioned way to the rough concentrate ore.

[0016] The inorganic regulator for improving the sorting index of molybdenum ore of the present invention, under a certain pH condition, the newly formed silicic acid molecules can quickly polymerize, and the initial stage of the polycondensat...

Embodiment 1

[0018] The present embodiment 1 is skarn type molybdenum sulfide ore, and its material composition is, metal mineral mainly contains molybdenite, pyrite, magnetite and hematite, a small amount of chalcopyrite, sphalerite, galena And chalcocite and bornite, etc., gangue minerals are mainly garnet, chlorite, calcite, a small amount of quartz, feldspar, siderite, epidote, actinolite, trace amounts of fluorite, tourmaline and Zircon etc. See Table 1 for comparison of ore test results using the regulator of the present invention and the traditional regulator. It can be seen that the new agent can significantly improve the flotation index of molybdenum ore after modification.

[0019] When kerosene is used as a collector and terpineol is a foaming agent, the modified water glass regulator of the present invention is added to the molybdenum concentrating operation, and the coarse concentrate is only subjected to 2 concentrating operations instead of the traditional 4-6 The closed-c...

Embodiment 2

[0022] This example 2 is a molybdenum oxide ore in a veinlet disseminated type high-temperature hydrothermal deposit, and the multi-element analysis result (wt%) is: Mo 0.34, WO 3 0.126, Cu 0.021, Pb2 34.29, Al 2 o 3 0.33, CaO 21.18, MgO 16.75, Na 2 O 0.1. The main metal minerals are molybdenite, scheelite, magnetite, pyrite, molybdenum, etc. The gangue minerals are mainly diopside, tremolite, actinolite, talc, chlorite, quartz, dolomite Stone etc. The oxidation rate of molybdenum in the ore reaches 21%, and the particle size of the useful minerals is mainly micro-grained, of which -20um accounts for 77.49%.

[0023] Adopt modified water glass inorganic modifier of the present invention to the condition experiment result of above-mentioned ore in Table 2. With the increase of the amount of modified water glass, the recovery rate of molybdenum increased significantly. The modified sodium silicate is used in the beneficiation operation, and the total consumption is cont...

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Abstract

A modified chemical for increasing the floatation quality of Mo-W ore is an inorganic adjusting agent composed of sulfuric acid and water glass proportionally. Its preparing process includes such steps as adding the sulfuric acid solution to water glass solution proportionally while stirring, and post-stirring for several minutes.

Description

technical field [0001] The invention relates to a preparation method and a use method of an inorganic regulator for effectively improving the beneficiation index of molybdenum-tungsten ore. Background technique [0002] Molybdenum-tungsten ore generally has a low grade of raw ore, mostly ranging from a few thousand molecules to a few thousand molecules, and the main grade of the concentrate is required to be high. The grade of molybdenum concentrate is generally above 46%, so the enrichment ratio is very large. In the sorting process, in order to obtain high-grade concentrates, the coarse concentrates are generally re-grinded and re-selected in multiple stages. The flotation particle size is very fine, and most of them have a grinding fineness of -400 mesh, accounting for more than 90%, which causes serious damage to the flotation process. Very difficult. Therefore, selective agents with outstanding effect, low price and convenient use are very important. [0003] Water gl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/002B03D101/00
Inventor 林大泽李皊值张永德肖云
Owner 青海西部矿业科技有限公司
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