Cassiterite ore separation method

A beneficiation method and ore technology, which are used in flotation, solid separation and other directions to achieve the effect of improving the total recovery rate of tin metal

Inactive Publication Date: 2006-01-18
黎东明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For cassiterite ore, the currently used beneficiation process is: including crushing, grinding, grading, desliming, and flotation. The specific process is to first crush the ore to a certain particle size (generally less than 20mm), and then carry out grinding and grading. After grading, for the part large...

Method used

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  • Cassiterite ore separation method

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Effect test

Embodiment 1

[0015] Treatment containing Sn 1.1%, SiO 2 31.3%, CaCO 3 11.2% cassiterite-quartz vein type ore, the process system is: the particle size of the incoming grinding ore is less than 20mm, the grinding condition is a grinding concentration of 55%, the pH of the grinding system is controlled at pH 6.8; the ore and the flotation reagent triphosphate The butyl ester is added into the ore grinding machine for grinding, and the dosage is 60 grams per ton of raw ore. The part larger than 0.5mm returns to the grinding machine, the part larger than 0.5mm enters the cyclone for classification, and the part larger than 0.039mm adopts gravity separation (generally shaker equipment) to recover cassiterite, and the obtained tin concentrate grade (Sn ) is 54%, and the recovery rate of this part of tin is 80.3%.

[0016] For the fine particle fraction less than 0.039mm, the flotation method is used for recovery without desliming in advance. The flotation concentration is 28%. The process o...

Embodiment 2

[0018] Treatment containing Sn 0.9%, SiO 2 21.3%, CaCO 3 16.8% placer-type ore, the process system is: the particle size of the ore to be ground is less than 20mm, the grinding condition is a grinding concentration of 50%, the pH of the grinding system is controlled at pH 6.8; the ore and the flotation reagent tributyl phosphate Join the ore grinding machine together to grind ore, and the dosage is 90 grams / ton of raw ore. The part larger than 0.5mm returns to the grinding machine, the part larger than 0.5mm enters the cyclone for classification, and the part larger than 0.039mm adopts gravity separation (generally shaker equipment) to recover cassiterite, and the obtained tin concentrate grade (Sn ) is 58%, and the recovery rate of this part of tin is 84.3%.

[0019] As for the fine-grained part smaller than 0.039mm, it is directly recovered by flotation without desliming in advance. The flotation concentration is 26%, and the process of two roughing, one sweeping and th...

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Abstract

Mineral separation for cassiterite ore comprises break, grinding, classification and the floatation for classified fine fraction less than 0.039mm. The floatation takes process of roughing for two times, scavenging for one time and refining for three times. It avoids over breaking, decreases fine ore greatly; as adding TBP, the ore needs not pre-desliming to recovery with floatation for the fine ore of less than 0.039mm. With this invention, for the cassiterite-quartz ore or tin placer with Sn content 0.6~2.0%, the flotation concentrate contains Sn more than 26%, the floatation recovery rate is more than 80%, and compared with traditional technique, the total recovery rate is increased more than 10%.

Description

technical field [0001] The invention relates to a beneficiation method of cassiterite ore. Background technique [0002] Cassiterite is the only common mineral of tin metal. Although other tin minerals have been confirmed in many deposits, they generally have no economic value. Cassiterite-quartz vein deposits and placer deposits are one of the main types of tin deposits in my country, mainly distributed in Yunnan, Guangxi, Guangdong, Hunan and other provinces. Cassiterite-quartz vein type deposits and placer deposits contain a large amount of primary fine mud; in addition, due to the brittle nature of cassiterite, ores containing cassiterite minerals are easy to be crushed during the beneficiation process, especially during crushing and grinding. Mud. For the recovery of coarse-grained tin ore, gravity separation is commonly used at present, but its recovery rate is generally lower than 80%. For a large amount of fine-grained cassiterite, in the process of reclaiming cas...

Claims

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Application Information

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IPC IPC(8): B03D1/02B03B1/00B03D101/02B03D101/04B03D101/06B03D103/02
Inventor 黎东明黎家足黎维中
Owner 黎东明
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