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Calcium carbonate inhibitor, preparation method and application thereof

A technology of calcium carbonate and inhibitor, which is applied in the direction of solid separation and flotation, can solve the problems that the products cannot meet the requirements of industrial grade, the recovery rate of ore dressing is low, and the content of calcium carbonate is high, so as to achieve good selectivity and inhibition, and environment-friendly Pollution, the effect of improving recovery rate of beneficiation

Inactive Publication Date: 2021-11-19
廖义芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the existing technology, it is common that either the calcium carbonate content in the concentrate is high, which cannot make the product meet the requirements of industrial grade, or the recovery rate of ore dressing is low, which wastes resources.

Method used

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  • Calcium carbonate inhibitor, preparation method and application thereof
  • Calcium carbonate inhibitor, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Add 75 parts of starch into the mixer, and adjust the stirring rate of the mixer to 70r / min. Then 0.72 parts of acetic acid (10 wt% acetic acid solution) was added to the starch by spraying or spraying. After the addition was completed, the stirring was continued for 10 min to obtain acidified starch.

[0055] The acidified starch is placed in a pre-dryer, and the acidified starch is pre-dried for 30 minutes by air flow at 25°C. Then place the pre-dried acidified starch in a roaster for heat treatment at 160° C. for 2 hours, and after the roasting is completed, cool to room temperature overnight to obtain a dry material.

[0056] Add the dry material to the mixer, then add 1.47 parts of sodium carbonate (10wt% sodium carbonate solution) to the dry material by spraying or spraying, and add 22.81 parts of anhydrous sodium sulfate to the mixer, and continue stirring Mix evenly, and obtain powdered calcium carbonate inhibitor I after sieving.

Embodiment 2

[0058] Add 75 parts of starch into the mixer, and adjust the stirring rate of the mixer to 70r / min. Then 0.72 parts of acetic acid (12 wt% acetic acid solution) was added to the starch by spraying or spraying. After the addition was completed, the stirring was continued for 10 min to obtain acidified starch.

[0059] The acidified starch is placed in a pre-dryer, and the acidified starch is pre-dried for 30 minutes by air flow at 25°C. Then place the pre-dried acidified starch in a roaster for heat treatment at 170° C. for 2 hours. After the roasting is completed, cool to room temperature overnight to obtain a dry material.

[0060] Add the dry material to the mixer, then add 1.96 parts of sodium carbonate (10wt% sodium carbonate solution) to the dry material by spraying or spraying, and add 22.32 parts of anhydrous sodium sulfate to the mixer, and continue stirring Mix evenly and sieve to obtain powdered calcium carbonate inhibitor II.

Embodiment 3

[0062] Add 74 parts of starch into the mixer, and adjust the stirring rate of the mixer to 80r / min. Then 0.9 parts of acetic acid (15 wt% acetic acid solution) was added to the starch by spraying or spraying. After the addition was completed, the stirring was continued for 10 min to obtain acidified starch.

[0063] The acidified starch is placed in a pre-dryer, and the acidified starch is pre-dried for 30 minutes by air flow at 25°C. Then place the pre-dried acidified starch in a roaster for heat treatment at 180° C. for 2 hours, and after the roasting is completed, cool to room temperature overnight to obtain a dry material.

[0064] Add the dry material to the mixer, then add 1.96 parts of sodium carbonate (12wt% sodium carbonate solution) to the dry material by spraying or spraying, and add 23.14 parts of anhydrous sodium sulfate to the mixer, and continue stirring Mix evenly and sieve to obtain powdered calcium carbonate inhibitor III.

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Abstract

The invention discloses a calcium carbonate inhibitor, a preparation method and application thereof. The calcium carbonate inhibitor mainly comprises starch, acetic acid, sodium carbonate and sodium sulfate. According to the invention, the preparation process is simple; by adopting the calcium carbonate inhibitor for the fluorite ore flotation process, the excellent inhibition effect on calcium carbonate and other carbonate gangue minerals is achieved, a fluorite concentrate product has the extremely low calcium carbonate content, the ore dressing recovery rate can be greatly increased, and then the high-quality fluorite concentrate product is obtained; and the calcium carbonate inhibitor also has the characteristics of no corrosion damage to equipment, no pollution to the environment, no toxicity, environment friendliness, easiness in degradation and the like.

Description

technical field [0001] The invention relates to a calcium carbonate inhibitor, in particular to a calcium carbonate inhibitor, a preparation method and application thereof, and belongs to the technical field of ore beneficiation impurity inhibitor agents. Background technique [0002] With the continuous mining and use of fluorspar, there are fewer and fewer high-grade fluorspar ores and easy-to-beneficiary ores, and co-generated (associated) fluorspar ores will become the mainstream of fluorspar resource utilization. Many fluorite deposits are symbiotic (associated) with calcium carbonate ore (calcite, bluestone). This kind of ore is a kind of refractory ore in the flotation and purification production of fluorite, because the specific gravity of fluorite and calcite and bluestone is not only They are similar, and their activity is also similar to that of flotation collectors. It is difficult to effectively suppress and remove impurities such as calcite by using conventiona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/06B03D103/02
CPCB03D1/018B03D2201/06B03D2203/02
Inventor 廖义芳祖兴龙钟高胜
Owner 廖义芳
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