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Process for separating molybdenum from lead in high-lead molybdenum ore

A kind of ore and process technology, applied in the field of molybdenum-lead separation process of high-lead molybdenum ore, can solve the problems of deteriorating selection operation conditions, low hardness of galena, easy crushing, etc., to improve product quality, strengthen suppression effect, solve the problem of containing The effect of high lead

Inactive Publication Date: 2016-05-25
JINDUICHENG MOLYBDENUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) Phosphoknox is the best inhibitor for galena, and its maximum dosage is 50g / t. When the dosage is higher than this value, the inhibitory effect of galena will not be enhanced, and the working conditions of beneficiation will be deteriorated
[0006] (2) When the lead grade in the raw ore is higher than 0.012%, the lead content in the molybdenum concentrate of grades above KMo-54 cannot meet the requirements
The recovery rate of galena in the roughing operation can reach 60%, which makes it difficult to suppress the selection operation
[0011] (3) Galena has low hardness and is easy to crush, and it is more difficult to suppress the galena in the coarse concentrate after being regrinded and partly muddy

Method used

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  • Process for separating molybdenum from lead in high-lead molybdenum ore

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Embodiment 1

[0035] In this embodiment, the mass percent content of lead is 0.016% to carry out the separation of molybdenum and lead from molybdenum-lead molybdenum ore. The specific process and medicament system are as follows: Figure 4 As shown, it includes carrying out a stage of grading after the raw ore is subjected to a stage of grinding process, and also includes the following steps:

[0036] Step 1. Send a section of graded overflow into a flotation machine or a flotation column for roughing to obtain roughing foam and roughing tailings; add a phosphoknox inhibitor to the roughing, and the dosage of the phosphoknox inhibitor is 8g / t raw ore;

[0037] Step 2, send the roughing tailings described in step 1 into the flotation machine and carry out rough sweeping for the first time, obtain the first rough sweep tailings and the first rough sweep foam, and the first rough sweep Foam returns to step 1; the amount of frother used in the first rough sweep is 2.3g / t raw ore;

[0038] St...

Embodiment 2

[0043] In this embodiment, the mass percent content of lead is 0.020% for the high-lead molybdenum ore to carry out molybdenum-lead separation. The specific process and medicament system are as follows: Figure 4 As shown, it includes carrying out a stage of grading after the raw ore is subjected to a stage of grinding process, and also includes the following steps:

[0044] Step 1. Send a section of graded overflow into a flotation machine or a flotation column for roughing to obtain roughing foam and roughing tailings; add a phosphoknox inhibitor to the roughing, and the dosage of the phosphoknox inhibitor is 12g / t raw ore;

[0045] Step 2, send the roughing tailings described in step 1 into the flotation machine and carry out rough sweeping for the first time, obtain the first rough sweep tailings and the first rough sweep foam, and the first rough sweep Foam returns to step 1; the amount of frother used in the first rough sweep is 1.9g / t raw ore;

[0046] Step 3, sending...

Embodiment 3

[0051] The present embodiment carries out molybdenum-lead separation to the high-lead molybdenum ore that the mass percent content of lead is 0.038%, and specific process and medicament system are as follows Figure 4 As shown, it includes carrying out a stage of grading after the raw ore is subjected to a stage of grinding process, and also includes the following steps:

[0052] Step 1. Send a section of graded overflow into a flotation machine or a flotation column for roughing to obtain roughing foam and roughing tailings; add a phosphoknox inhibitor to the roughing, and the dosage of the phosphoknox inhibitor is 20g / t raw ore;

[0053] Step 2, send the roughing tailings described in step 1 into the flotation machine and carry out rough sweeping for the first time, obtain the first rough sweep tailings and the first rough sweep foam, and the first rough sweep Foam returns to step 1; the amount of frother used in the first rough sweep is 1.5g / t raw ore;

[0054] Step 3, se...

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Abstract

The invention discloses a process for separating molybdenum from lead in high-lead molybdenum ore. The process comprises the following step: performing primary classification on crude ore after primary grinding. The process further comprises the following steps: firstly, feeding overflow of primary classification into a flotation machine or a flotation column for roughing so as to obtain rougher foams and rougher tailings, and adding a phosphorus-Nokes inhibitor into roughing; secondly, feeding the rougher tailings into the flotation machine for primary rough scavenging; thirdly, feeding the tailings after primary scavenging into the flotation machine for secondary rough scavenging; fourthly, performing rough concentration on the rougher foams so as to obtain rough concentrate, feeding the rough concentrate into a hydrocyclone for secondary classification, regrinding the bottom flow after secondary classification, and feeding back to the hydrocyclone for reclassification; fifthly, concentrating the overflow after secondary classification. As the phosphorus-Nokes is added into the roughing operation to pre-inhibit galena, a remarkable galena inhibition effect can be achieved, technical indexes such as the rough concentrate molybdenum recycling rate and the yield are equivalent to those of an original process, and no adverse effect can be caused to concentration.

Description

technical field [0001] The invention belongs to the technical field of ore separation, and in particular relates to a process for separating molybdenum and lead from high-lead-molybdenum ore. Background technique [0002] Lead is one of the main harmful elements in molybdenum concentrate, mainly in the form of galena. The high lead content in molybdenum concentrates leads to chain environmental pollution. During the process of roasting molybdenum oxide and refining ferromolybdenum, lead may be converted into toxic gas, polluting the ecological environment and affecting human health. Therefore, the requirements for lead content in molybdenum concentrate quality standards are getting higher and higher. Currently, it is required that the lead content of KMo-57 brand molybdenum concentrate is not more than 0.085%, and the lead content of KMo-54 brand molybdenum concentrate is not more than 0.130%. [0003] The beneficiation of molybdenite generally adopts the process of "segmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03D103/04
CPCB03D1/02B03D2203/04
Inventor 王永超王金玮温晓婵李九洲刘迎春康建雄邹艳
Owner JINDUICHENG MOLYBDENUM CO LTD
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