Method for roughing and tailings-discarding of fine rutile ore by multi-stage floatation

A rutile ore, step-by-step flotation technology, applied in flotation, solid separation and other directions, can solve the problems of complex gravity separation desliming process and large rutile loss, and achieve good desliming effect, small rutile loss, and chemical consumption. low effect

Inactive Publication Date: 2009-12-23
KUNMING UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

Gravity separation and desliming process is

Method used

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  • Method for roughing and tailings-discarding of fine rutile ore by multi-stage floatation

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Effect test

Embodiment 1

[0026] Rutile TiO in Shangnan Rutile Deposit, Shaanxi Province 2 1.96%, the gangue minerals are mainly vermiculite, hydromica, hornblende, etc., and also contain a small amount of iron-containing minerals magnetite, hematite and clay minerals. The particle size of rutile intercalation is fine, generally ranging from 0.01 to 0.1mm, which belongs to fine-grained and micro-fine particle uneven intercalation. Most rutile is arranged in intermittent stripes and streaks in the form of monomers and aggregates along the slab direction of the ore. Some are mixed with vermiculite and hydromica to form agglomerates, and some are wrapped by hornblende and biotite. Crushing, screening, grinding and grading the raw ore to achieve a suitable concentration of pulp with a fineness of 200 mesh accounting for 81.42%, adding sodium carbonate to adjust the pH value to 8, adding 800g / t of aluminum sulfate, adding 50g / t of sodium oleate, adding Pine oil 20g / t, carry out reverse flotation I; after r...

Embodiment 2

[0028] Ankang Rutile Mine in Shaanxi Province Contains Rutile TiO 2 4.71%, the gangue minerals are mainly chlorite, calcite, quartz, feldspar, and also contain a small amount of pyrite, pyrrhotite, limonite, etc. The particle size is about 0.0001-0.10mm, mostly 0.005-0.05mm, and the rutile is mainly embedded in chlorite and calcite in the form of inclusions, which is a refractory rutile ore. Crushing, screening, grinding and grading the raw ore to achieve a suitable concentration of ore pulp with a fineness of 200 meshes accounting for 98%, adding sodium carbonate to adjust the pH value to 8, adding 800g / t of aluminum sulfate, adding 50g / t of sodium oleate, adding Pine oil 20g / t, carry out reverse flotation I; after reverse flotation I, add sodium oleate 30g / t, add pine oil 10g / t, carry out reverse flotation II; after reverse flotation II, add pine oil 5g / t, carry out reverse flotation III, the foam yield of three reverse flotations is 34.21%, which contains 0.46% rutile, an...

Embodiment 3

[0030] Rutile TiO in Fangcheng Rutile Mine, Henan Province 2 2.09%, rutile intercalation particle size is fine, generally ranging from 0.01 to 0.2mm, which belongs to fine grain, micro-fine grain uneven intercalation, and is refractory rutile ore. Crushing, screening, grinding and grading the raw ore to achieve a suitable concentration of pulp with a fineness of 200 meshes accounting for 82.06%, adding sodium carbonate to adjust the pH value to 8, adding 800g / t of aluminum sulfate, adding 50g / t of sodium oleate, adding Pine oil 20g / t, carry out reverse flotation I; after reverse flotation I, add sodium oleate 30g / t, add pine oil 10g / t, carry out reverse flotation II; after reverse flotation II, add pine oil 5g / t, carry out reverse flotation III, the foam yield of three reverse flotations is 31.14%, which contains 0.39% rutile, and the removal rate of 10 μm in the ore reaches 76%. After reverse flotation III, add sodium carbonate to adjust the pH value to 8.5, add sodium fluo...

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Abstract

The invention provides a method for roughing and tailings-discarding of fine rutile ore by multi-stage floatation, relating to the technique for roughing and tailings-discarding of fine rutile ore by multi-stage floatation and belonging to the technical field of mineral processing engineering. The method of the invention comprises the following steps: firstly, conducting the reverse floatation of rutile by using sodium oleate as a collector according to the characteristics that aluminum sulfate can inhibit the rutile and activate silicate minerals in varying degrees, so as to effectively deslime in the process of reverse floatation; and then, conducting the forward floatation of rutile by using lead nitrate (or lead acetate) as an activator of rutile and using sodium alkyl hydroxamate and benzyl arsonic acid (or styryl phosphonic acid) as a combined collector according to the characteristic that gangue minerals can be inhibited on a combined basis under the synergistic action of sodium fluorosilicate, carboxymethylcellulose and the residual aluminum sulfate in the ore pulp, briefly, the method of the invention can realize the roughing and tailings-discarding of fine rutile by the multi-stage floatation comprising the following steps: firstly, conducting the reverse floatation by inhibiting the rutile; and then, conducting the forward floatation by activating the rutile. The method of the invention has the advantages that the enrichment ratio and recovery rate of rutile are high, the tailings of rutile ore can be discarded thoroughly and the mineral processing cost of rutile can be greatly reduced.

Description

1. Technical field [0001] The invention relates to a fine-grained rutile ore fine-grained rutile ore fine-grained flotation rough selection and tailings throwing technology, which belongs to the technical field of mineral processing engineering. 2. Background technology [0002] Natural rutile due to TiO 2 With high content and less impurities, it is an ideal raw material for chlorination titanium dioxide and sponge titanium. But the breakthrough of rutile beneficiation technology has always been the key to solve the development and utilization of natural rutile in our country. 86% of my country's natural rutile mines belong to primary ore. The grade of raw ore is low, the embedded distribution is fine, and the mineral composition and embedded distribution relationship are complex. High-quality rutile concentrate products can only be obtained through the combined beneficiation process of different compositions. A large number of research results show that the characteristi...

Claims

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Application Information

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IPC IPC(8): B03D1/02B03D1/018B03D1/014B03D1/01B03D1/008B03D1/002B03B1/00B03B1/04B03D101/06B03D101/02
CPCB03D1/008B03D1/01B03D1/014B03D1/018B03D2201/02B03D2203/02
Inventor 高利坤
Owner KUNMING UNIV OF SCI & TECH
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