Floating technology for low-grade refractory weathering collophanite section desliming

A low-grade collophosite technology, applied in flotation, solid separation, wet separation, etc., can solve problems such as high content of fine particles, deterioration of the separation environment, and interference in the flotation process, so as to avoid secondary adsorption, The effect of avoiding wastewater treatment discharge and reducing chemical consumption

Inactive Publication Date: 2015-10-07
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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Problems solved by technology

[0004] The useful mineral particles in the low-grade collophosphine in some areas of my country are fine, the minerals are tightly embedded, and there are many harmful impurities, which lead to a

Method used

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  • Floating technology for low-grade refractory weathering collophanite section desliming

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Example Embodiment

[0027] Example 1

[0028] A staged desliming flotation process for low-grade difficult-to-select weathered collophane phosphate rock is carried out according to the following steps:

[0029] (1) Gravity separation and desliming: first take 1000g of finely crushed phosphate rock sample, pour it into the washing machine, then add 20ml of water glass with a mass volume concentration of 10%, and finally fill the washing machine with water for stirring and scrubbing 10min, the scrubbed ore slurry enters the ore shaker for desliming treatment to obtain coarse-grained minerals and fine mud;

[0030] (2) Desliming by flotation: Grind the coarse-grained minerals obtained from the shaker to obtain a slurry with a mass fraction of -0.074mm accounting for 92.5%, then add it to the flotation machine, add 80g / t of No. 2 oil, stir for 3min, and aerate Scrape bubbles to obtain flotation sludge and underflow. (3) Positive and negative flotation: using an appropriate reagent system, under the condi...

Example Embodiment

[0032] Example 2

[0033] A staged desliming flotation process for low-grade difficult-to-select weathered collophane phosphate rock is carried out according to the following steps:

[0034] (1) Gravity separation and desliming: First take 1000g of finely crushed phosphate rock sample, pour it into the washing machine, then add 25ml of water glass with a mass volume concentration of 10%, and finally fill the washing machine with water for stirring and scrubbing 15min, the scrubbed ore pulp enters the ore shaker for desliming treatment to obtain coarse-grained minerals and fine mud;

[0035] (2) Desliming by flotation: Grind the coarse-grained minerals obtained from the shaker to obtain a slurry with a mass fraction of -0.074mm accounting for 95%, then add it to the flotation machine, add 100g / t of No. 2 oil, stir for 3min, and aerate Scrape bubbles to obtain flotation sludge and underflow;

[0036] (3) Positive and negative flotation: using an appropriate reagent system, under the c...

Example Embodiment

[0038] Example 3

[0039] A staged desliming flotation process for low-grade difficult-to-select weathered collophane phosphate rock is carried out according to the following steps:

[0040] (1) Gravity separation and desliming: first take 1000g of finely crushed phosphate rock sample, pour it into the washing machine, then add 22ml of water glass with a mass volume concentration of 10%, and finally fill the washing machine with water for stirring and scrubbing 12min, the scrubbed ore pulp enters the ore shaker for desliming treatment to obtain coarse-grained minerals and fine mud;

[0041] (2) Desliming by flotation: Grind the coarse-grained minerals obtained from the shaker to obtain a slurry with a mass fraction of -0.074mm accounting for 93.8%, then add it to the flotation machine, add 90g / t of No. 2 oil and stir for 2.5min, Aerated foaming to obtain flotation sludge and underflow;

[0042] (3) Positive and negative flotation: using an appropriate reagent system, under the condi...

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Abstract

The invention provides a floating technology for low-grade refractory weathering collophanite section desliming. The technology comprises the steps that after coarse crushing and fine crushing are carried out on raw ore, a surface treating agent is added, and the raw ore is subjected to washing in an ore washer; washed pulp enters a shaking table to be subjected to a first-section desliming, coarse particle minerals are subjected to next desliming, and fine silt serves as slurry and is processed; the ore grinding treatment is carried out on the coarse particle minerals, ore grinding pulp is subjected to second-segment desliming, deslimed pulp is subjected to the positive and negative floating operation, and floating concentrate and floating tailings are obtained; after concentrating and filtering are carried out on the floating concentrate, a phosphorus concentrate product and concentrate backwater are obtained, the concentrating and the filtering are carried out on positive floating tailings and negative floating tailings, a tailings product and tailings backwater are obtained, deslimed two-section slurry is subjected to the concentrating and the filtering, and a slurry product and slurry backwater are obtained; according to needs, the concentrate backwater, the tailings backwater and the slurry backwater are back to the floating operation and backwater points of the ore washer to be subjected to recycling. The phosphorus concentrate quality can be improved, and the resource utilization of the low-grate collophanite is achieved.

Description

technical field [0001] The invention belongs to the collophosite flotation technology, in particular to a segmental desliming flotation process of low-grade refractory weathered collophosite. Background technique [0002] At present, flotation is a main method of collophosite beneficiation, and flotation methods include direct flotation, reverse flotation, positive and negative (inverse) flotation and double reverse flotation, etc. For example: the publication date is 2014.12.03, and the publication number is CN104174504A. The Chinese invention patent document is named "Middle and low grade mixed refractory colloid ore positive flotation and branch flotation method". The specific process of this method is: (1) The mixed collophosite is crushed and ground until the monomers are dissociated; (2) Add positive flotation regulators such as sodium carbonate and water glass and fatty acid anion collectors to the slurry to adjust the slurry and mineralize it, and then inflate it for...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03B5/04
Inventor 程仁举李成秀陈炳炎廖祥文刘星罗惠华刘飞燕余滔张海峰
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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