CN104148368B - Wollastonite mine tailing after acidifying - Google Patents

Wollastonite mine tailing after acidifying Download PDF

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Publication number
CN104148368B
CN104148368B CN201410358818.0A CN201410358818A CN104148368B CN 104148368 B CN104148368 B CN 104148368B CN 201410358818 A CN201410358818 A CN 201410358818A CN 104148368 B CN104148368 B CN 104148368B
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mine tailing
wollastonite
acidifying
wollastonite mine
batching
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CN104148368A (en
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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 the wollastonite mine tailing after a kind of acidifying, the main points of its technical scheme are, the 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.After the acidified process of wollastonite mine tailing, the utilization rate of wollastonite mine tailing can be improved, not only can bring good economic benefit, environmental benefit and social benefit, and can realize turning waste into wealth.Wollastonite mine tailing after acidifying has the high feature of good thixotropy, heat endurance, plasticity, caking property and dry compression.Wollastonite mine tailing after acidifying is applicable to produce environment-friendly materials, construction material, blowing agent and fire product.

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 class usually.The former mainly originates in skarn ore deposits, and mineral constituent is complicated, normal association quartz, calcite and the skarn mineral such as diopside, garnet; The latter mainly originates in contact metamorphism and regional metamorphism type mineral deposit, the structure structure of wollastonite also has two kinds usually: compact massive ores particulate flower hilllock metacrystal or nematoblastic texture, compact massive constructs, wollastonite is tiny granular, column or fibrous agrregate, and indivedual superfine particle densification person is in beautiful shape; Coarse-grain wollastonite tool nematoblastic texture, block, seemingly dust shape, huge plaque-like or banded structure, wollastonite crystal is thick, in sheet-pile shape, pencil or radial.
Wollastonite mine tailing is a kind of alkaline waste produced 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 excellent and there is 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, threadiness or fiber collection shape.Concave-convex clay rod has unique dispersion, high temperature resistant, anti-good colloidal nature and the higher adsorption capacity such as saline and alkaline, 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.
Sulfuric acid select concentration be 98% the concentrated sulfuric acid.
Quick dissolved sodium silicate is white powder material, can rapid solution in water, have 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, external form divide cotton-shaped, graininess, Powdered three kinds; Nonpoisonous and tasteless, graininess can be dissolved in 80--90 DEG C of water, pulverous other powders pre-dispersed after 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, excellent film forming and the feature such as resistance to enzymatic, 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 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.
The production method of the wollastonite mine tailing 2, 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 operated, then dilute sulfuric acid is slowly added in wollastonite Tailings mixture carry out acidification; (2), by the wollastonite Tailings mixture after acidification, be wollastonite mine tailing tablet by twin rollers extruding, thickness≤3 millimeter of wollastonite mine tailing tablet; (3) wollastonite mine tailing tablet is transported to roasting in swinging drying oven, roasting time is 1 ~ 3 hour, sintering temperature controls 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: concentration is the concentrated sulfuric acid 1 ~ 25% and the water 75 ~ 99% of 98%, concentration be 98% concentrated sulfuric acid percentage be weight percentage.
The production method of the wollastonite mine tailing after acidifying takes first acidifying to carry out compounding ingredient again, sulfuric acid and quick dissolved sodium silicate, polyvinyl alcohol, hydroxypropyl methylcellulose and sodium carbonate generation chemical reaction can be avoided, give full play to raw-material respective characteristic in batching, and obtain complementation, guarantee the wollastonite mine tailing inherent quality after acidifying.
According to the needs of product quality, adopt the wollastonite mine tailing pH value after sodium carbonate adjustment acidifying, method is simple.
After the acidified process of wollastonite mine tailing, pH value controls 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 turning waste into wealth.
Wollastonite mine tailing after acidifying has the high feature of good thixotropy, heat endurance, plasticity, caking property and dry compression.
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 wollastonite mine tailing batching 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.
The production method of the wollastonite mine tailing 2, 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 operated, then dilute sulfuric acid is slowly added in wollastonite Tailings mixture carry out acidification; (2), by the wollastonite Tailings mixture after acidification, be wollastonite mine tailing tablet by twin rollers extruding, thickness≤3 millimeter of wollastonite mine tailing tablet; (3) wollastonite mine tailing tablet is transported to roasting in swinging drying oven, roasting time is 2 hours, sintering temperature controls 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: concentration is the concentrated sulfuric acid 6% and the water 94% of 98%.

Claims (6)

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;
The half-finished production method of wollastonite mine tailing after described acidifying: stir in the mixer (1) input of the batching of wollastonite Tailings mixture operated, then dilute sulfuric acid is slowly added in wollastonite Tailings mixture carry out acidification; (2), by the wollastonite Tailings mixture after acidification, be wollastonite mine tailing tablet by twin rollers extruding, thickness≤3 millimeter of wollastonite mine tailing tablet; (3) wollastonite mine tailing tablet is transported to roasting in swinging drying oven, roasting time is 1 ~ 3 hour, sintering temperature controls 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.
2. the wollastonite mine tailing after acidifying according to claim 1, 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%.
3. the wollastonite mine tailing after acidifying according to claim 1, 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%.
4. the wollastonite mine tailing after acidifying according to claim 1, is characterized in that, the batching of dilute sulfuric acid is made up of following component by weight percentage: concentration is the concentrated sulfuric acid 1 ~ 25% and the water 75 ~ 99% of 98%.
5. the wollastonite mine tailing after acidifying according to claim 3, is characterized in that, grain fineness≤0.5 millimeter of wollastonite mine tailing, grain fineness≤5 millimeter of Concave-convex clay rod.
6. the production method of the wollastonite mine tailing according to claim 1 after acidifying, is characterized in that, 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.
CN201410358818.0A 2014-07-27 2014-07-27 Wollastonite mine tailing after acidifying Active CN104148368B (en)

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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

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