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Slurry type heavy calcium carbonate of added porcelain clay for making paper and its preparing method

A technology of heavy calcium carbonate and heavy calcium carbonate powder is applied in the field of papermaking, which can solve the problems of incompatibility with the production requirements of high-speed paper machines, unstable viscosity, poor rheology, etc., and improve ink absorption and printability. , Improve the mixing performance, improve the appearance of the effect

Inactive Publication Date: 2007-10-10
寿光德圣造纸化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the coatings for paper products produced by heavy calcium carbonate have low whiteness and poor brightness. People often use china clay to solve this problem. Coating coatings for paper products produced with calcium as a raw material, in order to improve the good coating coverage on the coated paper surface, often use to increase its solid content, so there are also high viscosity, poor rheology, difficult to disperse, and poor compatibility Problems such as instability and viscosity are not suitable for the production requirements of high-speed paper machines, which affect normal production

Method used

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  • Slurry type heavy calcium carbonate of added porcelain clay for making paper and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Material preparation: 800 kg of 400-mesh heavy calcium carbonate powder, 16 kg of dispersant sodium polyacrylate, and 200 kg of china clay are used as raw materials;

[0017] Mixing: add 4.0 kg of water and dispersant to a container with a stirrer, start stirring and put in 800 kg of calcium carbonate powder for slurry mixing;

[0018] Raw material buffering: put the slurry into the raw material buffer tank and start stirring for raw material buffering;

[0019] Grinding: Turn on each grinding machine, and input the raw material slurry into each grinding machine, and gradually add the dispersant sodium polyacrylate dropwise into each grinding machine as the slurry enters, and one of the grinding machine dispersant sodium polyacrylate The dropping amount of the grinding dispersant sodium polyacrylate is 3.0 kg; the dropping amount of the second grinding dispersant sodium polyacrylate is 3.0 kg; the dropping amount of the third grinding dispersant sodium polyacrylate is 3...

Embodiment 2

[0026] Step is with embodiment one, wherein

[0027] When preparing materials, use 720 kg of heavy calcium carbonate powder, 14 kg of sodium polyacrylate as a dispersant, and 180 kg of china clay; when mixing slurry, add 3.6 kg of water and dispersant to a container with a stirrer, start stirring and put 800 Kilogram of calcium carbonate powder for pulping;

[0028] And when grinding, the dripping amount of the dispersant sodium polyacrylate in the first grinder is 2.6 kg; the dripping amount of the dispersant sodium polyacrylate in the second grinder is 2.6 kg; The amount is 2.6 kg; the dripping amount of the four-way grinder dispersant sodium polyacrylate is 2.6 kg, and at the same time, 180 kg of china clay is gradually and evenly added to the four-way grinder with the slurry entering;

[0029] Solid content 75% in the prepared slurry heavy calcium carbonate, particle ratio 98.3% less than 2um particle size, particle ratio 83.2% less than 1um particle size, 325 mesh sieve ...

Embodiment 3

[0031]Material preparation: The raw materials are 850 kg of heavy calcium carbonate powder, 18 kg of dispersant sodium polyacrylate, and 300 kg of china clay;

[0032] Mixing: add 4.5 kg of water and dispersant to a container with a stirrer, start stirring and put in 850 kg of calcium carbonate powder for slurry mixing;

[0033] Grinding: Turn on each grinding machine, and input the raw material slurry into each grinding machine, and gradually add the dispersant sodium polyacrylate dropwise into each grinding machine as the slurry enters, and one of the grinding machine dispersant sodium polyacrylate The dropping amount of the grinding dispersant sodium polyacrylate is 3.6 kg; the dropping amount of the second grinding dispersant sodium polyacrylate is 3.5 kg; the dropping amount of the third grinding dispersant sodium polyacrylate is 3.4 kg; the fourth grinding machine dispersant polyacrylic acid The dripping amount of sodium is 3.0 kg, and at the same time, 300 kg of china c...

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Abstract

The present invention discloses a kind of paste natural calcium carbonate into which a porcelain clay is added for making paper and its preparation method. It is made up by using (by weight portion) 720-850 portions of natural calcium carbonate, 14-18 portions of dispersing agent sodium polyacrylate, 180-300 portions of porcelain clay and proper quantity of water as raw material through the processes of mixing, buffering, grinding, screening and separation, etc.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a papermaking pulpy ground calcium carbonate with china clay added for producing papermaking coating coatings and a method for preparing the papermaking pulpy ground calcium carbonate with china clay added. Background technique [0002] In papermaking technology, the use of ground calcium carbonate to produce coating coatings for paper products is a very common technique. At present, most of the coatings for paper products produced by heavy calcium carbonate have low whiteness and poor brightness. People often use china clay to solve this problem. Coating coatings for paper products produced with calcium as a raw material, in order to improve the good coating coverage on the coated paper surface, often use to increase its solid content, so there are also high viscosity, poor rheology, difficult to disperse, and poor compatibility Problems such as instability and viscosity ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/38B28C1/04
Inventor 桑国德马家信桑春德王丙奎
Owner 寿光德圣造纸化工有限公司
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