Method for recovering rutile

A technology of styrene phosphonic acid and lead nitrate, applied in the field of rutile recovery, can solve the problems of large loss of rutile, poor selectivity, complex process, etc., and achieve the effects of fast flotation rate, easy control and simple operation.

Inactive Publication Date: 2017-07-07
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Collectors include oleic acid such as sodium oleate; sodium oleate has strong collection ability, but poor selectivity, and is mostly used in reverse flotation, with complicated process and large loss of rutile; arsine acids such as benzyl arsine; benzyl arsine Although the acid has a good beneficiation effect, it is highly toxic

Method used

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  • Method for recovering rutile

Examples

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Effect test

Embodiment 1

[0025] A certain rutile in Jiangsu is used, the ore body is eclogite, and the whole rock is mineralized. The main constituent minerals are garnet, omphacite and a small amount of quartz, mica and other minerals. According to the nature of the ore, the mine is considered to be eclogite type rutile ore. The main titanium-containing minerals in the ore are rutile and a small amount of ilmenite. Microscopic observation shows that the rutile in the ore is mainly disseminated. Rutile is mostly allomorphic granular or semi-euhedral granular crystal form. Most of the rutile in the ore is distributed among mineral particles such as garnet and omphacite, and part of it is wrapped by minerals such as garnet, which has a certain impact on the recovery of rutile. The particle size of rutile in the ore is relatively coarse, and some rutile and ilmenite are closely symbiotic. MLA analysis results show that -0.074mm accounts for 30% of the original ore, and the dissociation degree of ruti...

Embodiment 2

[0027] A rutile mine in Hubei is used. The rutile ore is green-black, dense and hard, and has a flaky structure with gray stripes (bands). Titanium minerals include rutile, ilmenite and titanite, and gangue minerals include white (sericic) mica. , oblique zoisite-epidedite, calcite, chlorite and pyrite, among which the useful minerals are rutile and garnet.

[0028] The ore sample is ground to a content of -0.074mm of 60%. Flotation is carried out after sedimentation desliming. Rough selection: 700g / t of lead nitrate, 1300g / t of sodium fluorosilicate, 500g / t of water glass, 700g / t of styrene phosphonic acid, 300g / t of n-octanol, rough selection after pulping. The rough selection scraping time is 90 seconds. Sweeping 1: lead nitrate 500g / t, styrene phosphonic acid 300g / t, n-octanol 200g / t. Sweep 2: lead nitrate 300g / t, sodium fluorosilicate 300g / t, styrene phosphonic acid 200g / t, n-octanol 150g / t; selection 1: sodium fluorosilicate 400g / t, styrene phosphonic acid 200g / t. ...

Embodiment 3

[0030]A complex low-grade rutile mine in Shaanxi is used. The useful minerals of this mine are mainly rutile, other main metal minerals include pyrrhotite and pyrite, and a small amount of siderite and monazite; gangue minerals include quartz and chlorite Stone, iron dolomite, feldspar, muscovite, followed by a small amount of apatite, sphene, biotite, hornblende, barite, etc.

[0031] The embedded particle size of rutile in the ore is relatively fine, which belongs to the ore with evenly distributed fine particles, and the particle size is roughly between 0.01-0.3mm. shape, rutile and gangue minerals are closely embedded, and more than 85% are embedded in gangue minerals such as chlorite. The ore sample is ground to a content of -0.074mm of 60%. Flotation is carried out after desliming by sedimentation desliming method. Rough selection: 500g / t of lead nitrate, 1000g / t of sodium fluorosilicate, 300g / t of water glass, 500g / t of styrene phosphonic acid, 200g / t of n-octanol, ro...

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Abstract

The invention relates to a method for recovering rutile. According to the method for recovering the rutile, desliming is conducted after raw ore is subjected to ore grinding, lead nitrate serves as an activator, sodium fluosilicate and water glass serve as inhibitors, styrene phosphoric acid and 1-capryl alcohol serve as collecting agents, second oil serves as a foaming agent, flotation separation is conducted, and rutile concentrate is obtained. The technical scheme of the method for recovering the rutile has the following technical effects that (1) the flotation index of the rutile is greatly increased to enable the grade of the rutile to be improved by over 80% and the recovering rate to be about 60% in roughing, then one-time medicating concentration, one-time blank concentration and two-time scavenging are conducted, finally, the TiO2 content in the concentrate reaches 92%, the concentration ratio is over 20, the recovering rate is between 80% and 85%, the TiO2 content in tailings is reduced to 0.5-0.7%; and (2) the pH of ore pulp does not need to be adjusted, operation is easy, a flotation foam layer is thick, control is easy, and the flotation velocity is high.

Description

technical field [0001] The invention belongs to the technical field of rutile beneficiation, and in particular relates to a simple and efficient new method for recovering rutile which improves the grade and recovery rate of rutile. Background technique [0002] Titanium is a silver-white transition metal, which has excellent properties of high temperature resistance, low temperature resistance, strong acid resistance, strong alkali resistance, high strength and low density, so it is known as "space metal". The most common compound of titanium—titanium dioxide, is the best white pigment, commonly known as titanium white. Rutile is relatively pure titanium dioxide, which is the main raw material for smelting titanium metal, manufacturing titanium dioxide and welding flux. [0003] Domestic primary rutile ore accounts for 86% of the total rutile reserves, but the ore grade is low, the embedded particle size is fine, and the mineral composition is complex. It is a refractory mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03D1/018B03D101/00B03D101/06B03D101/02B03D101/04B03D103/04
CPCB03D1/02B03D1/018B03D2201/00B03D2201/02B03D2201/04B03D2201/06B03D2203/04
Inventor 宋少先刘爽徐博赵云良贾菲菲
Owner WUHAN UNIV OF TECH
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