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A kind of composite multielement scale inhibitor and dispersant for mine and its application

A scale inhibitor and dispersant, mine technology, applied in scale removal and water softening, special treatment targets, water pollutants, etc., can solve problems affecting normal production, achieve the effect of preventing precipitation and realizing scale inhibition

Active Publication Date: 2016-02-24
厦门紫金矿冶技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Although the relevant published patents and commercially available scale inhibitors have good chelation and scale inhibition effects, in the process of cyanidation in gold mines, if the production water contains high calcium, magnesium, and high bicarbonate, the hydrogen A large number of calcium carbonate and magnesium crystals are formed after sodium oxide or calcium oxide is adjusted, and the precipitates are attached to the pipeline and the wall of the device, which seriously affects the normal production
None of the existing scale inhibitors can achieve good scale inhibition and dispersion performance under such high pH conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A composite multi-element antiscaling and dispersing agent for mines, comprising the following components by weight:

[0031] 30-60 parts by weight of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer

[0032] 30-60 parts by weight of 2-phosphonic acid butane-1,2,4-tricarboxylic acid

[0033] Optional medicament 0~30 parts by weight

[0034] Among them, the optional agents are polyacrylic acid, polyepoxysuccinic acid, aminotrimethylene phosphonic acid, hydroxyethylene diphosphonic acid, aminotrimethylene phosphonic acid, sodium dodecylsulfonate, sodium dodecylsulfate, One or several kinds of sodium oleate.

[0035] In a preferred embodiment of the present invention, the following components by weight percentage are included:

[0036] Acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer 30~60%

[0037] 2-Phosphonic acid butane-1,2,4-tricarboxylic acid 30~60%

[0038] Optional medicament 0-30%.

[0039] In a preferred embodiment of the pre...

Embodiment 2

[0051] Mix acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer and 2-phosphonic acid butane-1,2,4-tricarboxylic acid in a mass ratio of 50:50; after mixing evenly, use Tap water is configured into a solution with a concentration of about 20%. After dissolving completely, stop stirring and set aside.

[0052] Add the prepared agent to the experimental water at a concentration of 10mg / L. The experiment uses mine industrial water. The scaling ion content in the water is as follows: Ca 2+ 64mg / L, Mg 2+ 50mg / L, HCO 3 - 415mg / L.

[0053] After adding the medicament, adjust the pH value of the water to 12 with calcium oxide, and after standing for 24 hours, pour out the solution, rinse the container wall with pure water 5 times, and then use the prepared hydrochloric acid to dissolve the calcium and magnesium scaling on the wall, analyze The content of calcium and magnesium is detected, and compared with the compound multi-element antiscaling dispersant for mines wit...

Embodiment 3

[0055] Mix acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer, 2-phosphonic acid butane-1,2,4-tricarboxylic acid, polyacrylic acid, sodium lauryl sulfate at 50:30:10 : The mass ratio of 10 is mixed evenly. After mixing evenly, use tap water to configure a solution with a concentration of about 20%, and after completely dissolving, stop stirring and set aside.

[0056] Add the prepared agent to the experimental water at a concentration of 20mg / L. The experiment uses mine industrial water. The scaling ion content in the water is as follows: Ca 2+ 64mg / L, Mg 2+ 50mg / L, HCO 3 - 415mg / L. .

[0057] After adding the medicament, adjust the pH value of the water to 11 with calcium oxide. After standing still for 24 hours, pour out the solution, rinse the container wall with pure water 5 times, and then dissolve the calcium and magnesium scaling on the wall of the container with hydrochloric acid. The content of calcium and magnesium is detected, and compared with t...

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Abstract

The invention discloses a composite multi-element mine scale inhibition and dispersion agent, which comprises the following components by weight: 30-60 parts of an acrylic acid-2-acrylamido-2-methylpropane sulfonic acid copolymer, 30-60 parts of 2-phosphonobutane-1, 2, 4-tricarboxylic acid, and 0-30 parts of an optional reagent. Specifically, the optional reagent is one or more of polyacrylic acid, polyepoxysuccinic acid, amino trimethylene phosphonic acid, 1-hydroxyethylidene-1,1-diphosphonic acid, amino trimethylene phosphonic acid, sodium dodecyl sulfate, sodium lauryl sulfate, and sodium oleate. Under the combined action of all components involved in the invention, the synergistic effects on chelation, dispersion and lattice distortion of calcium and magnesium ions in water can be strengthened. The composite multi-element mine scale inhibition and dispersion agent has the functions of dispersing insoluble inorganic salts in water, preventing or interfering precipitation and scaling of insoluble inorganic salts on a metal surface, thus realizing the scale inhibition effect on calcium and magnesium ions in water.

Description

technical field [0001] The invention specifically relates to a composite multi-element scale inhibitor and dispersant for mines and its application. Background technique [0002] Although the relevant published patents and commercially available scale inhibitors have good chelation and scale inhibition effects, in the process of cyanidation in gold mines, if the production water contains high calcium, magnesium, and high bicarbonate, the hydrogen A large number of calcium carbonate and magnesium crystals are formed after sodium oxide or calcium oxide is adjusted, and the precipitation is attached to the pipeline and the wall of the device, which seriously affects the normal production. None of the existing scale inhibitors can achieve good scale inhibition and dispersion performance under such high pH conditions. How to improve the scale inhibition ability under such application conditions has become a great difficulty. Contents of the invention [0003] The purpose of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/10C02F5/14C02F103/16
CPCC02F5/10C02F5/14C02F2101/10C02F2103/16C02F2303/22
Inventor 黄怀国季常青谢洪珍申大志张卿林鸿汉叶志勇
Owner 厦门紫金矿冶技术有限公司
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