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A kind of beneficiation method of molybdenum-sulfur mixed concentrate

A beneficiation method and a technology of mixed concentrate, which is applied in the field of beneficiation of molybdenum-sulfur mixed concentrate, can solve the problem of high price, achieve cost saving, reduce separation difficulty, and achieve good separation effect

Active Publication Date: 2017-07-25
HUNAN RES INST FOR NONFERROUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the invention is to avoid the use of highly toxic and expensive beneficiation agents while maintaining the beneficiation index

Method used

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  • A kind of beneficiation method of molybdenum-sulfur mixed concentrate
  • A kind of beneficiation method of molybdenum-sulfur mixed concentrate
  • A kind of beneficiation method of molybdenum-sulfur mixed concentrate

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Effect test

Embodiment 1

[0032] A molybdenum-sulfur mixed concentrate has a molybdenum grade of 9.75% and a sulfur grade of 44.78%. The molybdenum minerals are mainly molybdenite, the pyrite minerals are mainly pyrite, and the fineness is -0.045mm, accounting for 60wt%. The degree of separation is 77%.

[0033] Grind molybdenum-sulfur mixed concentrate to -0.045mm, accounting for 95wt%, adjust the pulp to a pulp concentration of 20%, add 1000g / t activated carbon with a particle size of 0.074-0.10mm and stir for 10 minutes, filter the pulp with a sieve with an aperture of +0.074mm In addition to activated carbon particles, add 300g / tH 2 SO 4 , 1000g / t Fe 2 (SO 4 ) 3 and 400g / t KCl, inflated and stirred for 1 hour to passivate the surface of pyrite.

[0034] After the pyrite surface is passivated, 35g / t kerosene and 15g / t No. 2 oil are added to the slurry in turn to conduct molybdenum roughing to obtain molybdenum rough concentrate and roughing tailings. Kerosene is added to the roughing tailings f...

Embodiment 2

[0041] A molybdenum-sulfur mixed concentrate has a molybdenum grade of 5.34% and a sulfur grade of 45.46%. The molybdenum minerals are mainly molybdenite, and the pyrite minerals are mainly pyrite. The degree of body dissociation is 75%.

[0042] Grind molybdenum-sulfur mixed concentrate to -0.045 mm, accounting for 95 wt%, adjust the pulp to a pulp concentration of 18%, add 800 g / t of activated carbon with a particle size of 0.074-0.10 mm and stir for 10 minutes, filter the pulp with a sieve with an aperture of +0.074 mm In addition to activated carbon particles, add 400g / tH 2 SO 4 , 1000g / t Fe 2 (SO 4 ) 3 and 500g / t KCl, inflated and stirred for 1 hour to passivate the surface of pyrite.

[0043] After the pyrite surface is passivated, add 30g / t kerosene and 18g / t No. 2 oil to the pulp in sequence to carry out molybdenum roughing to obtain molybdenum rough concentrate and roughing tailings, and add kerosene to the roughing tailings for Sweeping, adding 7g / t kerosene to...

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Abstract

The invention relates to a beneficiation method for molybdenum-sulfur bulk concentrate. The beneficiation method for the molybdenum-sulfur bulk concentrate comprises the following steps that 1 the molybdenum-sulfur bulk concentrate is produced into ore pulp after ore grinding, activated carbon is added into the ore pulp, stirring reagent removing is conducted, and the grain diameter of the activated carbon ranges from 0.074 to 0.1 mm; 2 after reagent removing is conducted, the activated carbon in the ore pulp is eliminated, the pH value of the ore pulp is adjusted to 5 to 6, Fe2 ( SO4 )3 and KC1 are added, and air stirring is conducted; 3 flotation separation is conducted on the ore pulp processed in the step 2, and molybdenum concentrate and sulfur concentrate are obtained. The molybdenum grade of the molybdenum concentrate obtained by the beneficiation method is over 53 percents, the recovery rate of molybdenum is over 95 percents, and compared with other beneficiation methods, the method provided by the invention saves more cost and is more environmentally friendly.

Description

technical field [0001] The invention relates to a beneficiation method of molybdenum-sulfur mixed concentrate, which belongs to the field of molybdenum ore beneficiation. Background technique [0002] Usually, the symbiotic relationship between molybdenite and pyrite in low-grade sulfide molybdenum-sulphide ore is complicated, the embedded particle size is fine, and the buoyancy is similar, so the separation effect is poor, and the comprehensive recovery of molybdenum and sulfur is difficult. At present, the processing of such ores generally first obtains molybdenum-sulfur mixed concentrate through flotation, and then separates molybdenum-sulfur from the molybdenum-sulfur mixed concentrate to obtain molybdenum concentrate and sulfur concentrate. Separation of molybdenum and sulfur is usually carried out by suppressing sulfur and floating molybdenum. There are three main methods: (1) cyanide method, that is, sodium cyanide or potassium cyanide is used to inhibit pyrite flotat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00
Inventor 魏党生叶从新郭玉武韦华祖张丽敏骆任蒋素芳江锋朱永筠欧阳华
Owner HUNAN RES INST FOR NONFERROUS METALS
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