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Method for performing fine sieving, regrinding and bulk flotation on low-level silicon calcium collophanite

A hybrid flotation and calcigrade technology, applied in flotation, solid separation, grain treatment, etc., can solve the problem of secondary sludge deteriorating the flotation process, etc., achieve good flotation effect, reduce grinding costs, float Select the effect of foam viscosity reduction

Active Publication Date: 2014-07-30
BLUESTAR LEHIGH ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a low-grade siliceous-calcium collophosite for the problem that a large amount of secondary slime will be produced after fine grinding and will deteriorate the flotation process. Fine sieve and then grinding mixed flotation method finally achieves the effect of sorting out qualified products at a lower beneficiation cost

Method used

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  • Method for performing fine sieving, regrinding and bulk flotation on low-level silicon calcium collophanite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1, a fine sieve regrinding mixed flotation method of low-grade siliceous-calcareous colloidal phosphate rock, its steps are as follows:

[0039] (1) Grind the low-grade siliceous calcareous colloidal phosphate rock to a fineness of -0.074mm, accounting for 60.00% of the total weight of all materials, and then add water to make raw ore pulp with a weight concentration of 30.00%;

[0040] (2) Screen the ground raw ore pulp with a fine sieve. The concentration of the screening operation is 30.00%, and the particle size of 0.074mm, 0.063mm, and 0.045mm is graded respectively. The concentration under the sieve is adjusted to 15.00%, and the concentration on the sieve is 45.00%. ;

[0041] (3) After regrinding the material on the sieve, the part with a fineness of -0.074mm accounts for 80% of the total weight of all materials, and then add water to make raw ore pulp with a weight concentration of 30.00%;

[0042] (4) Place the regrinded material on the sieve and t...

Embodiment 2

[0045] Embodiment 2, a fine sieve regrinding mixed flotation method of low-grade siliceous-calcareous colloidal phosphate rock, its steps are as follows:

[0046] (1) Grind the low-grade siliceous calcareous colloidal phosphate rock to a fineness of -0.074mm, accounting for 80.00% of the total weight of all materials, and then add water to make raw ore pulp with a weight concentration of 50.00%;

[0047] (2) Sieve the raw ore pulp from grinding with a fine sieve. The concentration of the sieving operation is 50.00%, and the particle sizes of 0.074mm, 0.063mm, and 0.045mm are graded respectively. The concentration under the sieve is adjusted to 35.00%, and the concentration on the sieve is 65.00%. ;

[0048] (3) After regrinding the material on the sieve, the part with a fineness of -0.074mm accounts for 95% of the total weight of all materials, and then add water to make raw ore pulp with a weight concentration of 40.00%;

[0049] (4) Place the regrinded material on the sieve...

Embodiment 3

[0052] Embodiment 3, a fine sieve regrinding mixed flotation method of low-grade siliceous-calcareous colloidal phosphate rock, the steps are as follows:

[0053] (1) Grind the low-grade siliceous calcareous colloidal phosphate rock to a fineness of -0.074mm, accounting for 65.00% of the total weight of all materials, and then add water to make raw ore pulp with a weight concentration of 35.00%;

[0054] (2) Screen the ground raw ore pulp with a fine sieve. The concentration of the screening operation is 35.00%, and the particle sizes of 0.074mm, 0.063mm, and 0.045mm are graded respectively. The concentration under the sieve is adjusted to 20.00%, and the concentration on the sieve is 50.00%. ;

[0055] (3) After regrinding the material on the sieve, the part with a fineness of -0.074mm accounts for 85% of the total weight of all materials, and then add water to make raw ore pulp with a weight concentration of 33.00%;

[0056] (4) Place the regrinded material on the sieve and...

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Abstract

The invention discloses a method for performing fine sieving, regrinding and bulk flotation on low-level silicon calcium collophanite. The method comprises the following steps: finely grinding the low-level silicon calcium collophanite, adding water to prepare original ore pulp; sieving the grinded original ore pulp by a fine sieve; regrinding materials on the sieve, then adding water to prepare original ore pulp, putting the original ore pulp into a floatation device together with materials under the sieve, performing direct rough floatation so as to obtain under-sieve product direct floatation roughing concentrate and tailings; performing reverse floatation on the under-sieve product roughing concentrate so as to obtain under-sieve reverse floatation recleaning concentrate and tailings. Compared with a two-section continuous ore grinding technology, the method provided by the invention can be used for improving the floatation condition, and reducing the recovery loss caused by fine fraction mechanical entrapment in the floatation operation on one hand, and can be used for reducing the energy consumption of two-section ore grinding and further reducing the ore separation cost on the other hand. The method provided by the invention can play a favorable floatation effect, and can achieve the industrial production of purification of low-level silicon calcium collophanite easily.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a fine sieve regrinding mixed flotation method for low-grade siliceous-calcic collophosite. Background technique [0002] my country is rich in phosphate rock resources, and the resource base reserves rank second in the world. However, there are few rich ores, with an average grade of only about 17%. There are many difficult ores and few easy ores. Among the proven reserves, the refractory sedimentary phosphate rock (collophoste) accounts for about 85% of the total reserves, and most of them are medium and low-grade ores. For the sorting of this kind of ore, the impurities of carbonate and silicate must be removed at the same time to meet the requirements of fertilizer production. Among them, flotation is the most important sorting method. At present, the flotation process of collophosite mainly has a single Positive flotation process, single reverse flota...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B03D1/008
Inventor 李丰宋文义刘升林杨勇刘国举钱押林冯春晖刘星强刘云涛
Owner BLUESTAR LEHIGH ENG INST CO LTD
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