CN104148368A - Acidified wollastonite tailings - Google Patents

Acidified wollastonite tailings Download PDF

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Publication number
CN104148368A
CN104148368A CN201410358818.0A CN201410358818A CN104148368A CN 104148368 A CN104148368 A CN 104148368A CN 201410358818 A CN201410358818 A CN 201410358818A CN 104148368 A CN104148368 A CN 104148368A
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wollastonite
mine tailing
batching
acidifying
wollastonite mine
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CN104148368B (en
Inventor
管永祥
孙华
朱玫
王子臣
金白云
蒋文兰
许盛英
许庆华
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Dalian Earth Environment Technology Co., Ltd.
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许盛英
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Abstract

The invention discloses acidified wollastonite tailings. According to the key points of the technical scheme, the acidified wollastonite tailings comprise following materials: wollastonite tailings, attapulgite, magnesium oxide, sulfuric acid, instant sodium silicate, polyving akohol, hydroxypropyl methyl cellulose and sodium carbonate. The production method of the acidified wollastonite tailings comprises the following step: the materials of the acidified wollastonite tailings are input into a mill to be milled into flour, and milled flour is the acidified wollastonite tailings. After the wollastonite tailings are acidified, the utilization ratio of the wollastonite tailings can be improved, not only can favorable economic benefit, environment benefit and social benefit be brought, but also waste can be turned into wealth. The acidified wollastonite tailings have the characteristics of good thixotropy, thermal stability, plasticity, caking property and high dry pressing intensity, and are suitable for producing environment-friendly materials, building materials, foaming agents and fire-fighting products.

Description

Wollastonite mine tailing after acidifying
Technical field
The present invention relates to acidification, be specifically related to the wollastonite mine tailing after a kind of acidifying.
Background technology
Wollastonite natural type has Skarn-type ore and wollastonite-quartz-calcite type ore two classes conventionally.The former mainly originates in skarn ore deposits, mineral constituent complexity, the skarn minerals such as normal association quartz, calcite and diopside, garnet; The latter is mainly originated in contact metamorphism and regional metamorphism type mineral deposit, the Structural Tectonics of wollastonite also has two kinds conventionally: compact massive ores particulate flower hilllock metacrystal or nematoblastic texture, compact massive structure, wollastonite is tiny granular, column or fibrous agrregate, and indivedual superfine particle densification persons are beautiful shape; Coarse-grain wollastonite tool nematoblastic texture, block, seemingly dust shape, huge spot shape or banded structure, wollastonite crystal is thick, is sheet-pile shape, pencil or radial.
Wollastonite mine tailing is a kind of alkaline waste producing after the machine silicon limestone flour of ore dressing plant, pH value 8~9.5.
Summary of the invention
The object of the invention is to overcome weak point in prior art, the mine tailing of the wollastonite after a kind of acidifying is provided.
Wollastonite mine tailing batching after acidifying is made up of wollastonite mine tailing, Concave-convex clay rod, magnesia, sulfuric acid, quick dissolved sodium silicate, polyvinyl alcohol, hydroxypropyl methylcellulose and sodium carbonate.
The production method of the wollastonite mine tailing after acidifying: by abrasive dust in the wollastonite mine tailing batching input grinding machine after acidifying, the powder after abrasive dust is the wollastonite mine tailing after acidifying.
Wollastonite is a kind of inorganic needle-like mineral, its feature is nontoxic, resistance to chemical attack, heat endurance and dimensionally stable good, there are glass and pearly luster, low water absorption and oil factor, mechanical property and electrical property are good and have certain strengthening action, the present invention selects the wollastonite mine tailing after pulverizing, grain fineness≤0.5 millimeter of wollastonite mine tailing.
Concave-convex clay rod has unique layer chain structure feature, and crystal is needle-like, fibrous or fiber collection shape.Concave-convex clay rod has unique dispersion, high temperature resistant, the anti-good colloidal nature such as saline and alkaline and higher adsorption capacity, and has certain plasticity and cohesive force, and the present invention selects grain fineness≤5 millimeter of Concave-convex clay rod.
Magnesia has the general character of basic anhydride, belongs to Binder Materials, can improve the colloidal property of wollastonite mine tailing.
It is 98% the concentrated sulfuric acid that sulfuric acid is selected concentration.
Quick dissolved sodium silicate is white granular material, can be dissolved in fast water, has that cohesive force is strong, intensity is higher, acid resistance, good heat resistance, the feature of alkali resistance and poor water resistance.
Polyethenol series white solid, that external form is divided is cotton-shaped, graininess, Powdered three kinds; Nonpoisonous and tasteless, graininess can be dissolved in 80--90 DEG C of water, pulverously after other powders pre-dispersed, can dissolve at normal temperatures.There is good viscosity, polymerism, caking property and water-retaining property.
Hydroxypropyl methylcellulose has thickening capabilities, salt discharge, pH stability, water-retaining property, dimensional stability, good film forming and the feature such as resistance to enzyme, dispersiveness and caking property widely.
Sodium carbonate has the general character and the heat endurance of salt, soluble in water, and its aqueous solution is alkalescence, in the present invention for adjusting the wollastonite mine tailing pH value after acidifying.
The present invention is achieved by following technical proposals:
1, the batching of the wollastonite mine tailing after acidifying is made up of following component by weight percentage: wollastonite mine tailing semi-finished product 90~98%, quick dissolved sodium silicate 0.1~5%, polyvinyl alcohol 0.1~5%, hydroxypropyl methylcellulose 0.01~3% and sodium carbonate 0~3% after acidifying.
2, the production method of the wollastonite mine tailing after acidifying: by abrasive dust in the wollastonite mine tailing batching input grinding machine after acidifying, grain fineness≤0.074 millimeter, the powder after abrasive dust is the wollastonite mine tailing finished product after acidifying.
3, the half-finished production method of wollastonite mine tailing after acidifying: stir in the mixer (1) input of the batching of wollastonite Tailings mixture having been turned round, then dilute sulfuric acid is slowly added and carries out acidification in wollastonite Tailings mixture; (2) by the wollastonite Tailings mixture after acidification, push as wollastonite mine tailing tablet thickness≤3 millimeter of wollastonite mine tailing tablet by twin rollers; (3) wollastonite mine tailing tablet is transported to roasting in swinging drying oven, roasting time is 1~3 hour, sintering temperature is controlled at 250~350 DEG C, wollastonite mine tailing tablet water content≤5% after roasting, wollastonite mine tailing tablet after roasting is the wollastonite mine tailing semi-finished product after acidifying, and PCm is weight percentage.
4, the batching of wollastonite mine tailing tablet is made up of following component by weight percentage: wollastonite Tailings mixture 75~95% and dilute sulfuric acid 5~25%.
5, the batching of wollastonite Tailings mixture is made up of following component by weight percentage: wollastonite mine tailing 68~92%, Concave-convex clay rod 5~30% and magnesia 0.1~3%.
6, the batching of dilute sulfuric acid is made up of following component by weight percentage: the concentrated sulfuric acid 1~25% that concentration is 98% and water 75~99%, the concentrated sulfuric acid percentage that concentration is 98% is weight percentage.
The production method of the wollastonite mine tailing after acidifying takes first acidifying to carry out compounding ingredient again, can avoid sulfuric acid and quick dissolved sodium silicate, polyvinyl alcohol, hydroxypropyl methylcellulose and sodium carbonate generation chemical reaction, give full play to raw-material characteristic separately in batching, and obtain complementation, guarantee the wollastonite mine tailing inherent quality after acidifying.
According to the needs of product quality, adopt sodium carbonate to adjust the wollastonite mine tailing pH value after acidifying, method is simple.
After the acidified processing of wollastonite mine tailing, pH value is controlled at 5.5~7.5, can improve the utilization rate of wollastonite mine tailing, not only can bring good economic benefit, environmental benefit and social benefit, and can realize and turning waste into wealth.
Wollastonite mine tailing after acidifying has good thixotropy, heat endurance, plasticity, caking property and the high feature of dry-pressing intensity.
Wollastonite mine tailing after acidifying is applicable to produce environment-friendly materials, construction material, blowing agent and fire product.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
1, the batching of the wollastonite mine tailing after acidifying is made up of following component by weight percentage: wollastonite mine tailing semi-finished product 96%, quick dissolved sodium silicate 2%, polyvinyl alcohol 1.5%, hydroxypropyl methylcellulose 0.5% and sodium carbonate 0% after acidifying.
2, the production method of the wollastonite mine tailing after acidifying: by abrasive dust in the wollastonite mine tailing batching input grinding machine after acidifying, grain fineness≤0.074 millimeter, the powder after abrasive dust is the wollastonite mine tailing finished product after acidifying.
3, the half-finished production method of wollastonite mine tailing after acidifying: stir in the mixer (1) input of the batching of wollastonite Tailings mixture having been turned round, then dilute sulfuric acid is slowly added and carries out acidification in wollastonite Tailings mixture; (2) by the wollastonite Tailings mixture after acidification, push as wollastonite mine tailing tablet thickness≤3 millimeter of wollastonite mine tailing tablet by twin rollers; (3) wollastonite mine tailing tablet is transported to roasting in swinging drying oven, roasting time is 2 hours, sintering temperature is controlled at 280~320 DEG C, wollastonite mine tailing tablet water content≤5% after roasting, and the wollastonite mine tailing tablet after roasting is the wollastonite mine tailing semi-finished product after acidifying.
4, the batching of wollastonite mine tailing tablet is made up of following component by weight percentage: wollastonite Tailings mixture 90% and dilute sulfuric acid 10%.
5, the batching of wollastonite Tailings mixture is made up of following component by weight percentage: wollastonite mine tailing 78%, Concave-convex clay rod 20% and magnesia 2%.
6, the batching of dilute sulfuric acid is made up of following component by weight percentage: the concentrated sulfuric acid 6% that concentration is 98% and water 94%.

Claims (7)

1. the wollastonite mine tailing after an acidifying, it is characterized in that, the wollastonite mine tailing batching after acidifying is made up of following component by weight percentage: wollastonite mine tailing semi-finished product 90~98%, quick dissolved sodium silicate 0.1~5%, polyvinyl alcohol 0.1~5%, hydroxypropyl methylcellulose 0.01~3% and sodium carbonate 0~3% after acidifying.
2. the production method of the wollastonite mine tailing after acidifying according to claim 1, is characterized in that, by abrasive dust in the wollastonite mine tailing batching input grinding machine after acidifying, and grain fineness≤0.074 millimeter, the powder after abrasive dust is the wollastonite mine tailing finished product after acidifying.
3. the half-finished production method of wollastonite mine tailing after acidifying according to claim 1, it is characterized in that, (1) in the mixer input of the batching of wollastonite Tailings mixture having been turned round, stir, then dilute sulfuric acid is slowly added and in wollastonite Tailings mixture, carries out acidification; (2) by the wollastonite Tailings mixture after acidification, push as wollastonite mine tailing tablet thickness≤3 millimeter of wollastonite mine tailing tablet by twin rollers; (3) wollastonite mine tailing tablet is transported to roasting in swinging drying oven, roasting time is 1~3 hour, sintering temperature is controlled at 250~350 DEG C, wollastonite mine tailing tablet water content≤5% after roasting, and the wollastonite mine tailing tablet after roasting is the wollastonite mine tailing semi-finished product after acidifying.
4. the batching of wollastonite mine tailing tablet according to claim 3, is characterized in that, the batching of wollastonite mine tailing tablet is made up of following component by weight percentage: wollastonite Tailings mixture 75~95% and dilute sulfuric acid 5~25%.
5. the batching of wollastonite Tailings mixture according to claim 4, it is characterized in that, the batching of wollastonite Tailings mixture is made up of following component by weight percentage: wollastonite mine tailing 68~92%, Concave-convex clay rod 5~30% and magnesia 0.1~3%.
6. the batching of dilute sulfuric acid according to claim 4, is characterized in that, the batching of dilute sulfuric acid is made up of following component by weight percentage: the concentrated sulfuric acid 1~25% that concentration is 98% and water 75~99%.
7. the batching of wollastonite Tailings mixture according to claim 5, is characterized in that grain fineness≤0.5 millimeter of wollastonite mine tailing, grain fineness≤5 millimeter of Concave-convex clay rod.
CN201410358818.0A 2014-07-27 2014-07-27 Wollastonite mine tailing after acidifying Active CN104148368B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105294037A (en) * 2015-11-14 2016-02-03 蒋文兰 Wollastonite colored paint powder with function of purifying air

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997011992A1 (en) * 1995-09-28 1997-04-03 Corning Incorporated Material for imparting non-stick and non-wetting properties
CN101190441A (en) * 2006-11-27 2008-06-04 陈书怡 Waste residue material modifying method
CN103288354A (en) * 2005-08-25 2013-09-11 塞拉美克斯特有限责任公司 Synthesized hybrid rock composition, method, and article formed by the method
CN103539357A (en) * 2013-08-27 2014-01-29 中国科学院过程工程研究所 Silicon-slag microcrystalline glass and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997011992A1 (en) * 1995-09-28 1997-04-03 Corning Incorporated Material for imparting non-stick and non-wetting properties
CN103288354A (en) * 2005-08-25 2013-09-11 塞拉美克斯特有限责任公司 Synthesized hybrid rock composition, method, and article formed by the method
CN101190441A (en) * 2006-11-27 2008-06-04 陈书怡 Waste residue material modifying method
CN103539357A (en) * 2013-08-27 2014-01-29 中国科学院过程工程研究所 Silicon-slag microcrystalline glass and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105294037A (en) * 2015-11-14 2016-02-03 蒋文兰 Wollastonite colored paint powder with function of purifying air

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Inventor after: Cui Qiang

Inventor after: Chi Fengming

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