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Method for high-efficiency floatation and separation of molybdenum and nickel and recovery of molybdenum and nickel from high carbon nickel-molybdenum ore to obtain molybdenum concentrate and nickel-molybdenum bulk concentrate

A high-carbon molybdenum-nickel ore and mixed concentrate technology, applied in flotation, solid separation, etc., can solve the problems of no comprehensive recovery of metals, low recovery rate of nickel and molybdenum, and high production costs, so as to improve smelting recovery rate and product quality. Quality, reduce metallurgical cost, reduce the effect of production cost

Active Publication Date: 2011-10-19
HUNAN RES INST FOR NONFERROUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current conventional dressing and smelting process is backward, the sulfur dioxide produced by roasting causes great harm to the environment, the recovery rate of nickel and molybdenum is low, the production cost is high, and many associated valuable metals have not been comprehensively recovered

Method used

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  • Method for high-efficiency floatation and separation of molybdenum and nickel and recovery of molybdenum and nickel from high carbon nickel-molybdenum ore to obtain molybdenum concentrate and nickel-molybdenum bulk concentrate
  • Method for high-efficiency floatation and separation of molybdenum and nickel and recovery of molybdenum and nickel from high carbon nickel-molybdenum ore to obtain molybdenum concentrate and nickel-molybdenum bulk concentrate
  • Method for high-efficiency floatation and separation of molybdenum and nickel and recovery of molybdenum and nickel from high carbon nickel-molybdenum ore to obtain molybdenum concentrate and nickel-molybdenum bulk concentrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: A method for efficiently flotation-separating molybdenum-nickel from high-carbon molybdenum-nickel ore to recover molybdenum-nickel to obtain molybdenum concentrate and nickel-molybdenum mixed concentrate. The raw ore contains 1.22% molybdenum, 0.84% ​​nickel, and a carbon content of up to 18%. Around, the oxidation rate of nickel and molybdenum is greater than 30%; the molybdenum part is adsorbed on the carbon particles in the form of ions, and mainly occurs in the carbonaceous shale on the broken zone between the rock layers, and part of the molybdenum exists in the colloidal pyrite and inside various nodules; nickel minerals mainly exist in the form of disulfide nickel ore, arsenite, pyrite nickel ore, goethite and nickel huabi alum, and some nickel and colloid pyrite are closely symbiotic .

[0019] The process consists of raw ore selection, ore grinding, flotation decarburization, nickel-molybdenum separation flotation, and nickel-molybdenum mixed flotat...

Embodiment 2

[0025] Example 2: A method for efficiently flotation-separating molybdenum-nickel from high-carbon molybdenum-nickel ore to recover molybdenum-nickel to obtain molybdenum concentrate and nickel-molybdenum mixed concentrate. The raw ore contains 1.64% molybdenum, 0.92% nickel, and a carbon content of up to 23%. about.

[0026] The process consists of raw ore selection, ore grinding, flotation decarburization, nickel-molybdenum separation flotation, and nickel-molybdenum mixed flotation; the raw ore is ground by a ball mill, and the grinding fineness is 75%-200 mesh. High-carbon molybdenum-nickel ore contains high carbon content, and it is decarburized by flotation. Add 65g / ton of water glass and 680g / ton of lime as dispersant and pH adjuster in flotation decarbonization operation, 40g / ton of MIBC as foaming agent and collector, after stirring, enter the flotation machine for decarburization carbon flotation. The decarbonization operation obtains flotation carbon-containing mo...

Embodiment 3

[0031] Embodiment 3: The high-carbon molybdenum-nickel ore high-efficiency flotation separation of molybdenum and nickel reclaims molybdenum and nickel to obtain molybdenum concentrate and nickel-molybdenum mixed concentrate. The method includes the following steps:

[0032] (1) After the raw ore is ground, the fineness of the mineral material is such that the mineral material with a particle size of less than 0.074mm accounts for 68%-73% of the total grinding material, and then flotation is carried out; the flotation is first carried out by decarbonization flotation beneficiation operation to obtain carbon-containing molybdenum concentrate and decarbonized tailings;

[0033] (2) The obtained decarburized tailings are subjected to preferential flotation of molybdenum to obtain molybdenum roughing concentrate and molybdenum roughing tailings; the molybdenum roughing concentrate is then subjected to two beneficiation operations to obtain the final molybdenum concentrate product; ...

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Abstract

The invention discloses a method for high-efficiency floatation and separation of molybdenum and nickel and recovery of molybdenum and nickel from high carbon nickel-molybdenum ore to obtain molybdenum concentrate and nickel-molybdenum bulk concentrate. The method comprises the following steps of: selecting raw ore; grinding the ore; performing floatation to remove carbon; performing floatation of molybdenum preferably; and performing nickel-molybdenum bulk floatation, wherein in the step of performing carbon removal floatation, an ore dressing reagent of methyl isobutyl carbinol (MIBC) is used as a carbon substance foaming agent and collector, and water glass and lime are used as a dispersing agent and an ore pulp regulator; in the step of performing floatation of molybdenum preferably, emulsified kerosene is used as a collector for molybdenum mineral, terpenic oil is used as a foaming agent, carboxy methylated cellulose (CMC) is used as an inhibitor for carbonic matters and gangue, and Na2SO3 and lime are used as an inhibitor for nickel mineral and pentlandite; and in the step of performing nickel-molybdenum bulk floatation, ore dressing reagents of butyl xanthate and diethyldithiocarbamate are used as a collector for nickel-molybdenum mineral, terpenic oil is used as a foaming agent, CuSO4 is used to activate the nickel mineral, and sulfuric acid is used as a regulator to regulate the pH value of the ore pulp so as to induce the floatation of the nickel and the molybdenum. In the method, the metallic mineral separating effect is good, the recovery rates of metals are high, and the process flow is easy to control and has high repeatability.

Description

technical field [0001] The invention relates to the technical field of beneficiation, in particular to a beneficiation method of high-carbon molybdenum-nickel ore. Background technique [0002] High-carbon nickel-molybdenum ore is a unique layered nickel-molybdenum ore discovered in the Lower Cambrian black shale in the ancient basin along the southern Yangtze River in the 1960s. It is different from traditional nickel sulfide and molybdenum sulfide ores. The main feature of high-carbon nickel-molybdenum ore is high carbon content. Molybdenum minerals are mainly adsorbed on carbonaceous shale minerals in the atomic state and exist in the form of aggregates. Only a small amount of molybdenum exists in the form of molybdenite, and most molybdenum exists in the form of molybdenite. It exists in the form of carbonaceous shale aggregates; high-carbon nickel-molybdenum ore has a very high development and utilization value, in addition to containing nickel and molybdenum, it contai...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/018
Inventor 陈代雄杨建文刘锡桂李晓东曾惠明薛伟祁忠旭
Owner HUNAN RES INST FOR NONFERROUS METALS
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