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Method for producing superfine active heavy calcium carbonate for paint

A heavy calcium carbonate, production method technology, applied in the direction of dyeing low-molecular-weight organic compounds, fibrous fillers, etc. Effect

Inactive Publication Date: 2015-03-25
JIANGSU QUNXIN POWDER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the paint products use ultra-fine active ground calcium carbonate, due to the agglomeration of calcium carbonate during surface treatment, the paint product has poor paintability, and when doing coating film tests, unqualified phenomena often appear

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] 1. Production process

[0011] Mix 1000kg of heavy calcium carbonate with a particle size of D97≤10μm and 6-8kg of stearic acid, and then discharge the material after high-speed stirring until the temperature reaches 125°C. After classifying and removing the agglomerated particles, the final product is obtained. product.

[0012] 2. Comparison of product data made by different processes:

[0013] Activation degree (%) Pass 200 mesh sieve Products made by the original process 95.0 can't pass The product that process of the present invention makes 98.0 pass all

[0014] When the original product is used, the coating film test often fails due to calcium carbonate.

[0015] When the improved product is used, there is no non-compliance in the coating test due to calcium carbonate.

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PUM

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Abstract

The invention relates to a method for producing superfine active heavy calcium carbonate for paint, relating to the technical field of paint production and particularly relating to a production process technology for producing heavy calcium carbonate for the paint. The method comprises the following steps: carrying out modification treatment on the heavy calcium carbonate, and then removing an agglomerated granule; and treating a product which is subjected to surface treatment again to remove the agglomerated granule formed in a surface treatment process, and further fast cooling the product to ensure that the phenomenon of reaggregation can not be generated, wherein the product more meets the requirement for use of a coating product after the agglomerated granule is removed. In addition, the product prepared by adopting the process disclosed by the invention has higher activation grade compared with a product prepared by adopting an original process.

Description

technical field [0001] The invention relates to the technical field of paint production, in particular to the production technology of heavy calcium carbonate used for producing paint. Background technique [0002] When the paint product uses ultra-fine activated ground calcium carbonate, the paint product has poor paintability due to the agglomeration of calcium carbonate during surface treatment, and often fails when doing coating film tests. Contents of the invention [0003] The object of the invention is to propose a kind of production method of superfine activated ground calcium carbonate for paints at the defect of prior art. [0004] In the invention, the heavy calcium carbonate is modified, and then the agglomerated particles are removed. [0005] The product after surface treatment is treated again to remove the agglomerated particles formed during the surface treatment process, and at the same time, the product is further cooled rapidly to ensure that no re-agg...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/08C08K3/26C08K9/04
Inventor 林冬根
Owner JIANGSU QUNXIN POWDER TECH CO LTD
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