CN104497636A - Preparation method of polyacrylamide modified heavy calcium carbonate powder - Google Patents
Preparation method of polyacrylamide modified heavy calcium carbonate powder Download PDFInfo
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- CN104497636A CN104497636A CN201410710446.3A CN201410710446A CN104497636A CN 104497636 A CN104497636 A CN 104497636A CN 201410710446 A CN201410710446 A CN 201410710446A CN 104497636 A CN104497636 A CN 104497636A
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- calcium carbonate
- heavy calcium
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- carbonate powder
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Abstract
The invention discloses a preparation method of polyacrylamide modified heavy calcium carbonate powder, which is characterized by comprising the following steps: feeding coarse calcium carbonate with less than 1cm of diameter into a pulverizer; adding 1-3% of sodium carbonate based on the weight of the coarse powder of heavy calcium carbonate, and grinding to 5-10 microns at 85-95 DEG C; adding water to obtain slurry with 70-80% of solid content; adding 1-5% of modifier based on the weight of heavy calcium carbonate powder; beating the slurry into a wet-process stirred mill stripping machine through a pump valve; and grinding in a grinding medium to obtain modified superfine calcium carbonate powder with a particle size of 0.1-1 micron. The method disclosed by the invention has the advantages of scientific and reasonable design, simple process, safety and reliability, easiness in control, convenience in operation, adaptability to large-scale production, low production cost and the like.
Description
Technical field
The invention belongs to a kind of production method of calcium carbonate powder.
Background technology
At present, calcium carbonate is widely used in papermaking, plastics, plastics film, chemical fibre, rubber, tackiness agent, sealing agent, daily-use chemical industry, makeup, building materials, coating, paint, ink, putty, sealing wax, putty, carpet veneer is packed, medicine, food is (as chewing gum, chocolate), in feed, its effect has: increase small product size, reduce costs, improve processing characteristics (as adjusting viscosity, rheological property, curability), improve dimensional stability, reinforcement or half reinforcement, improve printing performance, improve physicals (as thermotolerance, extinction, wear resistance, flame retardant resistance, whiteness, glossiness) etc.The technological process of production of water-ground limestone has two kinds.Dry technology for production flow process: the first calcite, Wingdale, chalk, shell etc. that ship from stone quarry of picking, to remove gangue; Then with crusher, coarse breaking is carried out to Wingdale, cover that (pendulum-type) abrasive dust is broken obtains microlith limestone flour again with thunder, finally carry out classification with grading machine to abrasive dust, the powder meeting granularity requirements is put in storage as the packing of product, otherwise returns pulverizing mill abrasive dust again.Wet process technique flow process: first dry method fine powder is made suspension and be placed in grinding machine and pulverize further, just obtained superfine heavy calcium carbonate after dehydration, drying.
Retrieve through Chinese publication, find calcium carbonate application for a patent for invention 53; Do not find the scheme identical with present patent application.
Summary of the invention
The object of the invention is to; A kind of preparation method of polyacrylamide modified heavy calcium carbonate powder is proposed.
The preparation method of polyacrylamide modified heavy calcium carbonate powder of the present invention, comprises stone fragmentation, pulverizing, grinding, screening, activation, drying, classification, and product-collecting is packed; It is characterized in that: calcium carbonate coarse fodder diameter being less than 1 centimetre, send in pulverizing mill, with the weight percent meter of coarse heavy calcium carbonate powder, add after 1-3% sodium carbonate grinds and cause 5-10 micron at 85 ~ 95 DEG C, add water and be made into the slurry that solid content is 70% ~ 80%, with the weight percent meter of heavy calcium carbonate, add 1-5% and add properties-correcting agent, by pump valve, slurry is squeezed into wet method and stir disintegrating machine, grind in grinding medium, obtain the modified superfine Paris white that obtained particle diameter is 0.1 ~ 1 micron; Described auxiliary agent, by weight, by oxyethyl group bay cruel amine 25-30 part, aluminate coupling agent 5-8 part, sodium carbonate 5-8 part, ethylene glycol 5-8 part, dimethione 3-5 part, polyacrylamide 3-5 part composition.
The present invention compared with prior art its beneficial effect is: have design science reasonable, and technique is simple, safe reliability, is easy to control, easy to operate, is applicable to scale operation, the advantages such as production cost is low.
Embodiment
Below in conjunction with embodiment, the invention will be further described, but embodiments of the present invention are not limited thereto.
Embodiment 1
The preparation method of polyacrylamide modified heavy calcium carbonate powder of the present invention, comprises stone fragmentation, pulverizing, grinding, screening, activation, drying, classification, and product-collecting is packed; It is characterized in that: calcium carbonate coarse fodder diameter being less than 1 centimetre, send in pulverizing mill, with the weight percent meter of coarse heavy calcium carbonate powder, add after 1-3% sodium carbonate grinds and cause 5-10 micron at 85 ~ 95 DEG C, add water and be made into the slurry that solid content is 70% ~ 80%, with the weight percent meter of heavy calcium carbonate, add 1-5% and add properties-correcting agent, by pump valve, slurry is squeezed into wet method and stir disintegrating machine, grind in grinding medium, obtain the modified superfine Paris white that obtained particle diameter is 0.1 ~ 1 micron; Described auxiliary agent, by weight, by oxyethyl group bay cruel amine 25-30 part, aluminate coupling agent 5-8 part, sodium carbonate 5-8 part, ethylene glycol 5-8 part, dimethione 3-5 part, polyacrylamide 3-5 part composition.
Embodiment 2
The preparation method of polyacrylamide modified heavy calcium carbonate powder of the present invention, comprises stone fragmentation, pulverizing, grinding, screening, activation, drying, classification, and product-collecting is packed; It is characterized in that: calcium carbonate coarse fodder diameter being less than 1 centimetre, send in pulverizing mill, with the weight percent meter of coarse heavy calcium carbonate powder, add after 1-3% sodium carbonate grinds and cause 5-10 micron at 85 ~ 95 DEG C, add water and be made into the slurry that solid content is 70% ~ 80%, with the weight percent meter of heavy calcium carbonate, add 1-5% and add properties-correcting agent, by pump valve, slurry is squeezed into wet method and stir disintegrating machine, grind in grinding medium, obtain the modified superfine Paris white that obtained particle diameter is 0.1 ~ 1 micron; Described auxiliary agent, by weight, by the cruel amine of oxyethyl group bay 25 parts, aluminate coupling agent 8 parts, 5 parts, sodium carbonate, ethylene glycol 8 parts, dimethione 3 parts, polyacrylamide 5 parts composition.
Embodiment 3
The preparation method of polyacrylamide modified heavy calcium carbonate powder of the present invention, comprises stone fragmentation, pulverizing, grinding, screening, activation, drying, classification, and product-collecting is packed; It is characterized in that: calcium carbonate coarse fodder diameter being less than 1 centimetre, send in pulverizing mill, with the weight percent meter of coarse heavy calcium carbonate powder, add after 1-3% sodium carbonate grinds and cause 5-10 micron at 85 ~ 95 DEG C, add water and be made into the slurry that solid content is 70% ~ 80%, with the weight percent meter of heavy calcium carbonate, add 1-5% and add properties-correcting agent, by pump valve, slurry is squeezed into wet method and stir disintegrating machine, grind in grinding medium, obtain the modified superfine Paris white that obtained particle diameter is 0.1 ~ 1 micron; Described auxiliary agent, by weight, by the cruel amine of oxyethyl group bay 30 parts, aluminate coupling agent 5 parts, 8 parts, sodium carbonate, ethylene glycol 5 parts, dimethione 5 parts, polyacrylamide 3 parts composition.
Claims (1)
1. a preparation method for polyacrylamide modified heavy calcium carbonate powder, comprises stone fragmentation, pulverizing, grinding, screening, activation, drying, classification, and product-collecting is packed; It is characterized in that: calcium carbonate coarse fodder diameter being less than 1 centimetre, send in pulverizing mill, with the weight percent meter of coarse heavy calcium carbonate powder, add after 1-3% sodium carbonate grinds and cause 5-10 micron at 85 ~ 95 DEG C, add water and be made into the slurry that solid content is 70% ~ 80%, with the weight percent meter of heavy calcium carbonate, add 1-5% and add properties-correcting agent, by pump valve, slurry is squeezed into wet method and stir disintegrating machine, grind in grinding medium, obtain the modified superfine Paris white that obtained particle diameter is 0.1 ~ 1 micron; Described auxiliary agent, by weight, by oxyethyl group bay cruel amine 25-30 part, aluminate coupling agent 5-8 part, sodium carbonate 5-8 part, ethylene glycol 5-8 part, dimethione 3-5 part, polyacrylamide 3-5 part composition.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105348861A (en) * | 2015-10-23 | 2016-02-24 | 谭乔 | Functional calcium carbonate powder and production method thereof |
CN110577756A (en) * | 2019-09-27 | 2019-12-17 | 广西贺州市科隆粉体有限公司 | Composite modifier for modifying surface of calcium carbonate |
CN110877962A (en) * | 2019-09-27 | 2020-03-13 | 广西贺州市科隆粉体有限公司 | Surface modified heavy calcium carbonate suitable for artificial stone filler |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103232732A (en) * | 2013-05-02 | 2013-08-07 | 潍坊飞龙功能碳酸钙科技有限公司 | Preparation method of superfine modified ground limestone |
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2014
- 2014-11-28 CN CN201410710446.3A patent/CN104497636A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103232732A (en) * | 2013-05-02 | 2013-08-07 | 潍坊飞龙功能碳酸钙科技有限公司 | Preparation method of superfine modified ground limestone |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105348861A (en) * | 2015-10-23 | 2016-02-24 | 谭乔 | Functional calcium carbonate powder and production method thereof |
CN110577756A (en) * | 2019-09-27 | 2019-12-17 | 广西贺州市科隆粉体有限公司 | Composite modifier for modifying surface of calcium carbonate |
CN110877962A (en) * | 2019-09-27 | 2020-03-13 | 广西贺州市科隆粉体有限公司 | Surface modified heavy calcium carbonate suitable for artificial stone filler |
CN110877962B (en) * | 2019-09-27 | 2022-03-11 | 广西贺州市科隆粉体有限公司 | Surface modified heavy calcium carbonate suitable for artificial stone filler |
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Application publication date: 20150408 |