Micro-fine particle cassiterite flotation method

A technology of fine-grained cassiterite, applied in flotation, solid separation, etc., can solve the problems of high impurity content, low flotation recovery rate of fine-grained cassiterite, unsatisfactory concentrate grade, etc., and achieve the effect of enhancing hydrophobicity

Active Publication Date: 2017-12-22
BEIJING GENERAL RES INST OF MINING & METALLURGY
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the problems existing in the prior art, the present invention provides a fine-grained cassiterite flotation method, which solves the problems of low fine-grained cassiterite flotation recovery rate, unsatisfactory concentrate grade and high impurity content, and can obtain Sn-containing ≥35% tin concentrate with recovery rate ≥90%, significantly improving the recovery rate of fine-grained cassiterite and the quality of tin concentrate, realizing the efficient recovery of fine-grained cassiterite

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  • Micro-fine particle cassiterite flotation method

Examples

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Embodiment 1

[0048] The tin-containing material in this example is a gravity separation tailings in Bolivia, containing 0.46% tin. The gangue minerals in the tailings mainly include mica, quartz, tourmaline and kaolin, and the particle size of the minerals is less than 0.010 mm.

[0049] (1) The tin-containing material is directly prepared into an ore slurry with a solid phase concentration of 40wt%, and ammonium bicarbonate is added to the ore slurry. The amount of ammonium bicarbonate added is 330g / t of the tin-containing material, and stirred for 3min;

[0050] (2) Add regulator sodium carbonate and lead nitrate to the pulp after adding ammonium bicarbonate in step (1), the addition of sodium carbonate is 240g / t tin-containing material, the addition of lead nitrate is 300g / t tin-containing material , stirring for 6 minutes;

[0051] (3) add collector naphthalene hydroxamic acid, benzohydroxamic acid, oxidized paraffin wax soap in the ore pulp that step (2) obtains, and foaming agent met...

Embodiment 2

[0057] The tin-containing material in this embodiment is a gravity separation tailings in Peru, containing 0.53% tin. The gangue minerals in the tailings mainly include mica, calcite, quartz, and kaolin, and the particle size of the minerals is less than 0.010 mm.

[0058] (1) The tin-containing material is directly prepared into a slurry with a solid phase concentration of 40wt%, and ammonium bicarbonate is added to the slurry. The amount of ammonium bicarbonate added is 360g / t of the tin-containing material, and stirred for 3min;

[0059] (2) Add regulator sodium carbonate and lead nitrate to the pulp after adding ammonium bicarbonate in step (1), the addition of sodium carbonate is 230g / t tin-containing material, the addition of lead nitrate is 300g / t tin-containing material , stirring for 6 minutes;

[0060] (3) add collector naphthalene hydroxamic acid, benzohydroxamic acid, oxidized paraffin wax soap in the ore pulp that step (2) obtains, and foaming agent methyl isobuty...

Embodiment 3

[0065] The tin-containing material in this embodiment is a tin mine in Myanmar, containing 1.06% tin. The gangue minerals in this tin mine mainly include mica, quartz, and kaolin, and the cassiterite intercalation particle size is extremely fine.

[0066] (1) Grind the tin-containing material to a particle size of less than 0.019mm, then adjust it into a slurry with a solid phase concentration of 35wt%, add ammonium bicarbonate to the slurry, the amount of ammonium bicarbonate added is 380g / t of tin-containing material, and stir for 3 minutes;

[0067] (2) Add regulator sodium carbonate and lead nitrate to the pulp after adding ammonium bicarbonate in step (1), the addition of sodium carbonate is 260g / t tin-containing material, the addition of lead nitrate is 300g / t tin-containing material , stirring for 6 minutes;

[0068] (3) add collector naphthalene hydroxamic acid, benzohydroxamic acid, oxidized paraffin wax soap in the ore pulp that step (2) obtains, and foaming agent me...

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Abstract

The invention relates to a micro-fine particle cassiterite flotation method. The micro-fine particle cassiterite flotation method comprises the steps that tin-containing materials are prepared into pulp, and ammonium bicarbonate is added in the pulp; then an adjusting agent, collecting agents and a foaming agent are added, wherein the collecting agents comprise naphthalene hydroximic acid, benzohydroxamic acid and oxidized paraffin wax soap; and the pulp is subjected to roughing, and then citric acid and sodium fluosilicate are added into tin rough concentrate for choiceness to obtain cassiterite concentrate. The problems that the micro-fine particle cassiterite flotation recovery rate is low, the concentrate grade is unsatisfactory, and the impurity content is high are solved, and the tin concentrate with the Sn content being larger than or equal to 35% and the recovery rate being larger than or equal to 90% can be obtained; and compared with the prior art, the thin concentrate recovery rate is increased by 15-20%, and the tin concentrate grade is improved by 10-15%. The low-carbon, environment-friendly, economical and efficient method for micro-fine particle cassiterite recovery through flotation is simple in technique, has the advantages that the material adaptability is high, using is safe and stable, the reagent dosage is few, and pollution is little, and has good application prospects.

Description

technical field [0001] The invention relates to the technical field of mineral processing or beneficiation, in particular to a fine-grained cassiterite flotation method. Background technique [0002] At present, the main mineral resource of the tin industry in the world is still cassiterite, which is mainly produced in sulfide ore deposits and skarn tin deposits. For coarse-grained cassiterite, the gravity separation method is generally used for recovery; for fine-grained cassiterite, the recovery rate of single gravity separation is extremely low, and the flotation method or combined separation and smelting method is generally used for recovery, but the overall effect is very unsatisfactory. Cassiterite recovery is a difficult point in the field of tin ore extraction. [0003] In the prior art, there are at least the following technical difficulties in the beneficiation and recovery of fine-grained cassiterite: first, there is a lot of ore slime, and the quality of the ore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D1/08B03D101/02B03D101/06B03D103/02
CPCB03D1/018B03D1/082B03D2201/02B03D2201/06B03D2203/02
Inventor 尚衍波肖巧斌王中明谭欣凌石生刘方刘书杰呼振峰
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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