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Iron mineral inhibitor and production method thereof

A production method and inhibitor technology, which are applied in solid separation, flotation and other directions, can solve the problems of reducing tailings grade, weak action ability of fine-grained iron minerals, weak inhibition ability, etc., so as to reduce flotation tailings, Increase the ability of action, strengthen the effect of effective action

Active Publication Date: 2017-06-13
天津天宝翔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems of the original corn starch inhibitor's weak action and inhibition ability on fine-grained iron minerals, improve the concentrate grade and metal recovery rate, and reduce the tailings grade

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] In the first step, a mixture of the following components by weight is reacted at 82°C to 85°C for 2 hours to obtain high-efficiency additive 1:

[0065] 100 parts cornstarch

[0066] Sodium ethylate catalyst 0.8 parts

[0067] Sodium Chloroacetate 8 parts

[0068] In the second step, the high-efficiency additive 2 is obtained by reacting the mixture of the following components in parts by weight at 73°C to 75°C for 4 to 5 hours:

[0069] 1 100 parts of high-efficiency additives obtained by the above-mentioned first step

[0070] 8 parts of ethylene oxide

[0071] Sodium acetate catalyst 0.6 parts

[0072] The third step is to obtain the finished inhibitor product by reacting the mixture of the following components by weight at 52°C to 55°C for 2 to 3 hours:

[0073] 100 parts of high-efficiency auxiliary agent 2 obtained by the above-mentioned second step

[0074] 3 parts sodium periodate

[0075] Copper sulfate catalyst 0.4 parts

[0076] Product performance: C...

Embodiment 2

[0078] In the first step, a mixture of the following components by weight is reacted at 82°C to 85°C for 2 hours to obtain high-efficiency additive 1:

[0079] Tapioca starch 100 parts

[0080] Sodium hydroxide catalyst 3.0 parts

[0081] Sodium Chloroacetate 10 parts

[0082] In the second step, the high-efficiency additive 2 is obtained by reacting the mixture of the following components in parts by weight at 72°C to 75°C for 4 to 5 hours:

[0083] 1 100 parts of high-efficiency additives obtained by the above-mentioned first step

[0084] 8 parts of ethylene oxide

[0085] Sodium carbonate catalyst 0.6 parts

[0086] The third step is to obtain the finished inhibitor product by reacting the mixture of the following components by weight at 52°C to 55°C for 2 to 3 hours:

[0087] 100 parts of high-efficiency auxiliary agent 2 obtained by the above-mentioned second step

[0088] 9 parts hydrogen peroxide

[0089] Ferrous sulfate catalyst 0.4 parts

[0090] Product perfor...

Embodiment 3

[0092] In the first step, a mixture of the following components by weight is reacted at 82°C to 85°C for 2 hours to obtain high-efficiency additive 1:

[0093] 100 parts wheat starch

[0094] Sodium hydroxide catalyst 3.0 parts

[0095] Sodium Chloroacetate 10 parts

[0096] In the second step, the high-efficiency additive 2 is obtained by reacting the mixture of the following components in parts by weight at 73°C to 75°C for 4 to 5 hours:

[0097] 1 100 parts of high-efficiency additives obtained by the above-mentioned first step

[0098] 8 parts of ethylene oxide

[0099] Sodium carbonate catalyst 0.8 parts

[0100] The third step is to obtain the finished inhibitor by reacting the mixture of the following components by weight at 53°C to 55°C for 2 to 3 hours:

[0101] 100 parts of high-efficiency auxiliary agent 2 obtained by the above-mentioned second step

[0102] 9 parts hydrogen peroxide

[0103] Ferrous sulfate catalyst 0.4 parts

[0104] Product performance: C...

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Abstract

The invention discloses a production method of an iron mineral inhibitor. The production method comprises the following steps: step I, enabling a mixture of following components in parts by weight to react for 1 to 4 hours at 60 to 90 DEC to obtain an additive (1): 100 parts of corn starch, cassava starch or wheat starch, 0.5 to 4.0 parts of sodium ethoxide or sodium hydroxide and 5 to 15 parts of sodium chloroacetate; step II, enabling a mixture of following components in parts by weight to react for 3 to 6 hours at 50 to 80 DEG C to obtain an additive (2): 100 parts of the additive (1) obtained in the step I, 5 to 15 parts of ethylene oxide, and 0.2 to 1.0 part of sodium carbonate or sodium acetate; and step III, enabling a mixture of the following components in parts by weight to react for 1 to 3 hours at 30 to 60 DEG C to obtain an inhibitor finished product: 100 parts of the additive (2) obtained in the step II, 1 to 12 parts of sodium periodate or hydrogen peroxide, and 0.2 to 1.0 part of ferrous sulfate or cupric sulfate.

Description

technical field [0001] The invention relates to an iron mineral inhibitor and a preparation method thereof, belonging to the technical field of ore dressing agents. Background technique [0002] The inhibitors used in iron ore flotation mainly include small molecule inhibitors and macromolecule inhibitors. Small molecule inhibitors include water glass, sodium hexametaphosphate, tartaric acid, etc.; macromolecular inhibitors include starch, carboxymethyl cellulose, sodium humate, dextrin, and polyacrylamide. The most widely used of these inhibitors is corn starch. When using corn starch to inhibit iron minerals, there are often problems such as high tailings. The reason is that cornstarch has a weak ability to act on fine-grained iron minerals, which makes it easy for fine-grained iron minerals to enter the tailings, resulting in high iron grades and low iron recovery rates. Contents of the invention [0003] The purpose of the present invention is to provide a kind of pr...

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 梅建庭杨威曹翠
Owner 天津天宝翔科技有限公司
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