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

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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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-temperature roasting technology, the roasting temperature is about 400 °C, the surface of carbonaceous shale is oxidized and decarburized, and conventional shale inhibitors are used to suppress it, so as to realize the separation of carbonaceous shale and molybdenite. High energy consumption and environmental pollution problems

[0007] At present, there is no report on the use of alizarin and calcium lignosulfonate as inhibitors for the separation of molybdenum sulfide and carbonaceous shale

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