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Preparation method of plastic film superfine heavy calcium carbonate

A technology of heavy calcium carbonate and plastic film, which is applied in chemical instruments and methods, inorganic pigment treatment, dyed organosilicon compound treatment, etc., can solve the problems of not found, and achieve the effect of convenient operation, low production cost and easy control

Inactive Publication Date: 2015-04-01
GUANGXI HEZHOU HONGREN MACHINERY ENERGY SAVING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Through the search of Chinese published patents, 53 calcium carbonate invention patent applications were found; no solution identical to this patent application was found

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] The preparation method of the plastic film superfine heavy calcium carbonate of the present invention comprises crushing, pulverizing, grinding, sieving, activating, drying, grading of stones, product collection and packaging; it is characterized in that: coarse calcium carbonate with a diameter of less than 1 centimeter Feed into the pulverizer, add 1-3% sodium carbonate, 1-3% dodecyl dimethyl benzyl ammonium chloride respectively in the weight percentage of heavy calcium carbonate coarse powder, at 85~ After grinding to 5-10 microns at 95°C, add water to form a slurry with a solid content of 70% to 80%, based on the weight percentage of heavy calcium carbonate powder, add 1-5% of modifier, and pass through the pump valve Put the slurry into a wet stirring grinding and peeling machine, and grind it in a grinding medium to obtain a modified ultrafine calcium carbonate powder with a particle size of 0.1 to 1 micron; the additive, by weight, consists of 6-- It consists of...

Embodiment 2

[0011] The preparation method of the plastic film superfine heavy calcium carbonate of the present invention comprises crushing, pulverizing, grinding, sieving, activating, drying, grading of stones, product collection and packaging; it is characterized in that: coarse calcium carbonate with a diameter of less than 1 centimeter Feed into the pulverizer, add 1-3% sodium carbonate, 1-3% dodecyl dimethyl benzyl ammonium chloride respectively in the weight percentage of heavy calcium carbonate coarse powder, at 85~ After grinding to 5-10 microns at 95°C, add water to form a slurry with a solid content of 70% to 80%, based on the weight percentage of heavy calcium carbonate powder, add 1-5% of modifier, and pass through the pump valve Put the slurry into a wet stirring grinding and peeling machine, and grind it in a grinding medium to obtain a modified ultrafine calcium carbonate powder with a particle size of 0.1 to 1 micron; the additive, by weight, consists of 6-- It consists of...

Embodiment 3

[0013] The preparation method of the plastic film superfine heavy calcium carbonate of the present invention comprises crushing, pulverizing, grinding, sieving, activating, drying, grading of stones, product collection and packaging; it is characterized in that: coarse calcium carbonate with a diameter of less than 1 centimeter Feed into the pulverizer, add 1-3% sodium carbonate, 1-3% dodecyl dimethyl benzyl ammonium chloride respectively in the weight percentage of heavy calcium carbonate coarse powder, at 85~ After grinding to 5-10 microns at 95°C, add water to form a slurry with a solid content of 70% to 80%, based on the weight percentage of heavy calcium carbonate powder, add 1-5% of modifier, and pass through the pump valve Put the slurry into a wet stirring grinding and peeling machine, and grind it in a grinding medium to obtain a modified ultrafine calcium carbonate powder with a particle size of 0.1 to 1 micron; the additive, by weight, consists of 6-- It consists of...

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Abstract

The invention discloses a preparation method of plastic film superfine heavy calcium carbonate. The preparation method comprises the steps of breaking, crushing, grinding, screening, activating, drying and classifying stone blocks, and collecting and packaging a product. The preparation method is characterized by comprising the following steps: feeding a calcium carbonate coarse material with the diameter of less than 1cm into a flour mill; in weight percentage of heavy calcium carbonate coarse powder, adding 1-3% of sodium carbonate and 1-3% of dodecyl dimethyl benzyl ammonium chloride respectively; grinding to 5-10 microns at 85-95 DEG C, and then adding water to prepare a slurry with the solid content of 70-80%; in weight percentage of heavy calcium carbonate powder, adding 1-5% of a modifier; and driving the slurry into a wet method stirring grinding machine by virtue of a pump valve, and grinding in a grinding medium to obtain modified superfine calcium carbonate powder with the particle size of 0.1-1 micron. The preparation method has the advantages of scientific and reasonable design, simple process, safety, reliability, easiness in control, convenience in operation, suitability for large-scale production, low production cost and the like.

Description

technical field [0001] The invention belongs to a production method of calcium carbonate powder. Background technique [0002] At present, calcium carbonate has been widely used in papermaking, plastics, plastic films, chemical fibers, rubber, adhesives, sealants, daily chemicals, cosmetics, building materials, coatings, paints, inks, putty, sealing wax, putty, felt packaging, medicine , food (such as chewing gum, chocolate), and feed, its functions include: increasing product volume, reducing cost, improving processing performance (such as adjusting viscosity, rheological properties, vulcanization properties), improving dimensional stability, reinforcing or semi-reinforcing , Improve printing performance, improve physical properties (such as heat resistance, extinction, abrasion resistance, flame retardancy, whiteness, gloss) and so on. There are two production processes of heavy calcium carbonate. Dry production process: First, hand-select calcite, limestone, chalk, shel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C3/04C09C3/06C09C3/08C09C3/10C09C3/12
Inventor 廖煜明廖文成李杰钟俊良
Owner GUANGXI HEZHOU HONGREN MACHINERY ENERGY SAVING TECH
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