Carbonaceous shale inhibitor and flotation separation method of molybdenum sulfide and carbonaceous shale flotation mixed concentrate

A carbonaceous shale and mixed concentrate technology, applied in flotation, solid separation, etc., can solve the problems of difficult large-scale promotion, high energy consumption, and high toxicity of nigrosine, and achieve easy large-scale promotion and simplified process flow , the effect of good separation effect

Active Publication Date: 2013-07-24
HUNAN RES INST FOR NONFERROUS METALS
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Problems solved by technology

[0004] At present, there are few studies on the separation of molybdenum sulfide and carbonaceous shale at home and abroad. There are mainly two separation methods. The first separation method is that Zou Jian et al. Rock pure mineral flotation separation method, the grade of molybdenum concentrate obtained is only 30%, this method is highly toxic to nigrosine, which is seriously harmful to human body, and it is difficult to promote on a large scale
The second method is to use low-temp

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  • Carbonaceous shale inhibitor and flotation separation method of molybdenum sulfide and carbonaceous shale flotation mixed concentrate
  • Carbonaceous shale inhibitor and flotation separation method of molybdenum sulfide and carbonaceous shale flotation mixed concentrate
  • Carbonaceous shale inhibitor and flotation separation method of molybdenum sulfide and carbonaceous shale flotation mixed concentrate

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[0032] Example 1

[0033] The molybdenum grade of a flotation mixed concentrate of molybdenum sulfide and carbonaceous shale is 5.30%, molybdenum minerals are mainly molybdenite, gangue minerals are mainly carbonaceous shale, and the content of carbonaceous shale is 81%. Grinding, the monomer dissociation degree of molybdenum mineral is 94%.

[0034] The mixed concentrate of molybdenum sulfide and carbonaceous shale flotation was adjusted to a slurry concentration of 33%, followed by adding 80g / t sodium hexametaphosphate to the ore, and the carbonaceous shale inhibitor of the present invention 120g / t to the ore (alizarin 80g / t for mine, calcium lignosulfonate 40g / t for mine), kerosene 40g / t for mine, 2 # 20g / t of oil is fed to the ore, molybdenum roughing is carried out, and rough molybdenum concentrate and roughing tailings are obtained. The roughing tailings are added with kerosene and 2 # Sweep the oil, sweep one kerosene and 2 # The amount of oil added is 12g / t to the ore and ...

Example Embodiment

[0041] Example 2

[0042] A mixed ore of molybdenum sulfide minerals and carbonaceous shale has a molybdenum grade of 8.73%. Molybdenum minerals are mainly collosulfide molybdenum. The content of carbonaceous shale is 75%, and the fineness is 85%-74μm. The degree is 92%.

[0043] The mixed ore of molybdenum sulfide and carbonaceous shale is adjusted to a slurry concentration of 33%, and the dispersion inhibitor sodium hexametaphosphate 130g / t is sequentially added to the ore, and the carbonaceous shale inhibitor described in claim 1 or 2 is fed to the ore at 180g / t (Alizarin 120g / t for ore, calcium lignosulfonate 60g / t for ore), molybdenum sulfide mineral inhibitor kerosene 45g / t for ore, 2 # 20g / t of oil is fed to the ore, molybdenum roughing is carried out, and rough molybdenum concentrate and roughing tailings are obtained. The roughing tailings are added with kerosene and 2 # Sweep the oil, sweep one kerosene and 2 # The amount of oil added is 15g / t to the ore and 10g / t to the...

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Abstract

The invention belongs to the technical field of mineral dressing and particularly relates to a carbonaceous shale inhibitor and a flotation separation method of molybdenum sulfide and carbonaceous shale flotation mixed concentrate. The carbonaceous shale inhibitor consists of alizarin and calcium lignosulphonate. The method comprises the following steps that the molybdenum sulfide and carbonaceous shale flotation mixed concentrate is used as raw materials, the alizarin and the calcium lignosulphonate are adopted for inhibiting carbonaceous shale, molybdenum sulfide minerals are subjected to flotation, and the flotation separation of the molybdenum sulfide minerals and the carbonaceous shale is carried out. Carbonyls and hydroxies in the alizarin form hydrophilic complexes with aluminum atoms in the carbonaceous shale, meanwhile, lipophilic groups of the calcium lignosulphonate can be adsorbed on the surface of the carbonaceous shale to generate non-polar solid surface monolayer absorption, and the lipophilic groups at the other end are hydrophilic, so the carbonaceous shale is hydrophilic, and the carbonaceous shale is inhibited. The carbonaceous shale inhibitor and the flotation separation method have the advantages that the technological process of the molybdenum sulfide and carbonaceous shale flotation separation is simplified, and a good separation effect is obtained.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a carbonaceous shale inhibitor and a flotation separation method for molybdenum sulfide and carbonaceous shale flotation mixed concentrate. Background technique [0002] Carbonaceous shale is a kind of shale containing a large amount of dispersed carbonized organic matter, mainly containing hydrous silicate minerals such as aluminum and magnesium, belonging to clay rock, lamellar structure, and argillaceous structure. One of the difficult problems in the beneficiation of molybdenum ore. [0003] Carbonaceous shale is called "black stone" in the mine, and it is easy to float after being ground. Only 2 # A large number of hydrophobic silver-gray foams are formed, which are indistinguishable from molybdenum sulfide ore foams by naked eyes. The problem of decline in the beneficiation index of molybdenum ore due to the mixing of carbonaceous gangue is common. ...

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Application Information

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IPC IPC(8): B03D1/00B03D1/018B03D101/06
Inventor 陈代雄杨建文李晓东祁忠旭董艳红曾惠明
Owner HUNAN RES INST FOR NONFERROUS METALS
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