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A method for pre-sizing and grading gravity separation raw ore and its application

A technology for mixing pulp and raw ore, applied in chemical instruments and methods, solid separation, wet separation, etc., can solve the problems of reducing recovery rate, affecting the utilization rate of shaking table, affecting the classification effect, etc.

Active Publication Date: 2017-09-15
临武县南方矿业有限责任公司
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Problems solved by technology

Therefore, if cassiterite with a fine particle size of -19μm is also re-selected in the shaking table, it will affect the utilization rate of the shaking table for other particle sizes, and because the particle size distribution is too wide, it will affect the classification effect, resulting in recovery. reduce

Method used

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  • A method for pre-sizing and grading gravity separation raw ore and its application
  • A method for pre-sizing and grading gravity separation raw ore and its application
  • A method for pre-sizing and grading gravity separation raw ore and its application

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Embodiment 1

[0079] Embodiment 1, check the whole process of experiment

[0080] 1. Reference figure 1 The whole process of re-selection of raw ore is set for industrial application full-process verification. The specific process is as follows:

[0081] (1) Slurry grading is carried out in advance on the gravity separation raw ore of Yuling Polymetallic Mine of Linwu County Nanfang Mining Co., Ltd., which is divided into -19μm fine-grained slurry, +38μm shaker optional particle size and +150μm granular The fine-grained sludge enters the flotation as an overflow, the optional particle size of the shaker enters the gravity separation as the underflow, and the +150μm particle size is pre-tailed. The metal distribution rate of +150μm particle size is only 2.15%, but the yield accounts for 9.82%, and most of them are conjoined organisms; when this level enters the flotation system, it will interfere with the recovery of effective target minerals and affect the selection index; therefore, Pre-...

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Abstract

The invention provides a technological method for recycling fine-particle cassiterite from gravity raw ore. The method is characterized by comprising advanced slurry mixing and grading steps on the gravity raw ore; the advanced slurry mixing and grading steps comprise technologies for carrying out gravity concentration on underflow and carrying out flotation on overflow, and comprise separation of fine-particle slime from the particle capable of being sepatated by a table concentrator; the fine-particle slime is fed to flotation as overflow; the particle capable of being sepatated by the table concentrator is fed to gravity concentration as the underflow. According to the advanced slurry mixing and grading method, effective recovery of the fine-particle cassiterite in the overflow which is subjected to advanced slurry mixing and grading is achieved; the technical problem of recovery of the fine-particle cassiterite is overcome; new idea and exploration direction are provided for ore dressing workers for solving fine-particle cassiterite recovery research; the ore feeding mode of a traditional cassiterite gravity-recovery process is broken through; with respect to the overflow which is subjected to advanced slurry mixing and grading overflow, when the grade of tin in the ore feeding process is 0.75%, the grade of tin concentrate which is obtained by tin flotation is 6.52%, the operation recovery rate is 61.26% and the recovery rate in the ore feeding process is 60.09%.

Description

technical field [0001] The invention relates to a method for pre-sizing and classifying sulfide ore flotation tailings (gravity separation raw ore) and its industrial application. Background technique [0002] my country is rich in tin ore resources and widely distributed. Mainly primary ore deposits, of which there are many associated components, and the comprehensive utilization value is great. Cassiterite (SnO 2 ) is the main tin-bearing mineral recovered, followed by zurtinite (or kesterite). More than 75% of tin metal comes from cassiterite. [0003] The main industrial types of cassiterite occurrence: in cassiterite-rare metal deposits, cassiterite is closely symbiotic with niobite, tantalite, and beryl; in residual slope sand tin deposits, cassiterite and iron oxide minerals Dense symbiosis; in cassiterite-sulfide deposits, cassiterite and wolframite, galena, pyrite, etc. are symbiotic, and the embedded particle size is fine. Therefore, cassiterite is difficult t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00
CPCB03B7/00
Inventor 谢善国刘清高王玉成文武生谭志超唐义胜罗飞
Owner 临武县南方矿业有限责任公司
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