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Reprocessing method of tin flotation rough concentrate and industrial application thereof

A tin flotation and reprocessing technology, applied in the field of tin flotation coarse concentrate reprocessing, can solve the problems of over-crushing of cassiterite, difficulty in effective recovery of fine-grained grades, etc., achieving low energy consumption, good sorting indicators, adaptable effect

Active Publication Date: 2015-07-08
临武县南方矿业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the beneficiation process and technical requirements, the grinding fineness is 65% to 70%, and there is over-grinding of cassiterite, which makes it difficult to effectively recover fine-grained grades, especially micro-fine-grained grades, in re-selection

Method used

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  • Reprocessing method of tin flotation rough concentrate and industrial application thereof
  • Reprocessing method of tin flotation rough concentrate and industrial application thereof
  • Reprocessing method of tin flotation rough concentrate and industrial application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] See Table 1 for the technical indicators of re-recovering the tin flotation concentrate of the gravity separation tailings through high-efficiency centrifugal equipment.

[0087] The specific process is as follows:

[0088] (1) Carry out shaking table gravity separation according to conventional methods to the gravity separation raw ore of Yuling polymetallic mine of Linwu County South Mining Co., Ltd.;

[0089] (2) carry out flotation to gravity separation tailings, comprise the following steps:

[0090] (2.1) Carry out magnetic separation at first, obtain magnetic product and nonmagnetic product; Wherein the tin grade of magnetic product is 0.23%, the tin grade of nonmagnetic product is 0.73%;

[0091] (2.2) Concentrating the non-magnetic product after magnetic separation;

[0092] (2.3) carry out sulfur flotation to the product after concentration; Described sulfur flotation comprises two times of beneficiation and three times of scavenging; The tin grade of the su...

Embodiment 2

[0102] See Table 2 for the technical indicators of reclaiming the flotation tin concentrate that overflows through the high-efficiency centrifugal equipment for gravity separation raw ore pre-sizing and classification overflow.

[0103] The specific process is as follows:

[0104] (1) Slurry grading is carried out on the gravity separation raw ore of Yuling Polymetallic Mine of Linwu County Nanfang Mining Co., Ltd. in advance, and -19μm fine-grained slurry, +38μm shaker can choose particle size and +150μm, so that The fine-grained sludge enters the flotation as an overflow, and the optional particle size of the shaker enters the re-election as an underflow; the metal distribution rate of the +150μm particle size is only 2.15%, but the yield accounts for 9.82%, and most For conjoined organisms. After this grade enters the flotation system, it will interfere with the recovery of effective target minerals and affect the selection index. Therefore, the pre-throwing method is ado...

Embodiment 3

[0117] Embodiment 3, different equipment compares the rate of recovery of tin flotation concentrate

[0118] The flotation tin concentrate is reprocessed through different recovery equipment, and the specific technical indicators are shown in Table 3.

[0119] Table 3. Comparison of recovery rates of tin flotation concentrates by different equipment

[0120]

[0121] It can be seen from the table that using high-efficiency centrifugal equipment to recover tin flotation concentrate can obtain the indicators of final tin concentrate grade of 40%, operational recovery rate of more than 70%, and recovery rate of more than 11% of the raw ore of the dressing plant. The technical and economic indicators of industrial application have obvious advantages compared with the research indicators of cassiterite flotation test in similar mines.

[0122] The present invention forms a closed-circuit system through the high-efficiency centrifugal equipment and tin flotation, which avoids th...

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Abstract

The invention provides a reprocessing method of tin flotation rough concentrate. The reprocessing method is characterized by comprising the steps of reselecting and reprocessing to recover the tin flotation rough concentrate through efficient centrifugal equipment, and returning the acquired reselected ores into a tin flotation system. According to the reprocessing method provided by the invention, the tin flotation rough concentrate can be recycled to meet the indexes that the final concentrate grade is 40%, the operation recovery is above 70%, and the raw ore of a concentrating plant is above 11% by the efficient centrifugal equipment; furthermore, after the efficient centrifugal equipment and the flotation system are closed, middlings can be directly returned to the tin flotation system, so as to prevent the loss of intermediate products.

Description

technical field [0001] The invention relates to a method for reprocessing tin flotation rough concentrate 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] Cassiterite (SnO 2 ) Density (6.8~7.0g / cm 3 ) are larger than the associated gangue minerals. The re-election cost is low and environmentally friendly. Therefore, gravity beneficiation is a traditional process for producing tin concentrate. However, with the passage of mining time, the particle size of cassiterite in the selected ore is getting finer, and the particle size of -38μm is difficult to be effectively recovered by gravity separation alone. Flota...

Claims

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Application Information

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Patent Type & Authority Applications(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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