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Superhigh-fineness calcium carbonate composite powder

A calcium carbonate and composite powder technology, applied in inorganic pigment treatment, dyeing physical treatment, chemical instruments and methods, etc., can solve the problems of limited product performance improvement, low product added value, and poor product pertinence, to avoid two problems. The effect of secondary reunion

Inactive Publication Date: 2014-06-25
许峰
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Problems solved by technology

Due to the large reserves, good quality, broad market and good development space of calcium carbonate in China, the output and demand of calcium carbonate in China have increased rapidly in the past two decades, but most of them are used as ordinary fillers. Use, the product is not targeted, generally belongs to low-end products, and the performance improvement of the product is limited, so there are problems such as low added value of the product.

Method used

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Embodiment Construction

[0022] The present invention will be further described in detail according to the examples below.

[0023] A preparation method of high-fineness calcium carbonate functional composite powder, the steps comprising:

[0024] (1) Calcite raw ore is washed, air-dried and pulverized;

[0025] (2) Use a vibrating sieve to perform primary classification and impurity removal on the pulverized powder, and reclassify powders with different particle size distributions by adjusting the cyclone classification parameters to an average particle size of 0.45 microns to 2.5 microns, and a d97 of 2 microns ~5 microns;

[0026] (3) In terms of weight percentage, 30% to 70% of the powder that has been classified and removed, 3% to 25% of the metal oxide sol ground by the sol mill, 40% to 70% of water, and 0.5% to 5.5% of the ground The dispersant is mixed, stirred and ground. The surface of the ground calcium carbonate in the powder is coated with inorganic materials. The thickness of the coati...

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Abstract

The invention discloses a preparation method for a superhigh-fineness calcium carbonate composite powder. Simply, the preparation method comprises steps of cleaning of calcite raw ore, air drying, crushing, grading, mixing preparation, cladding, drying and modification. The beneficial effects comprise that the superhigh-fineness calcium carbonate composite powder has relatively high quality, the loading of calcium carbonate is improved, and secondary agglomeration of particles is avoided.

Description

technical field [0001] The invention relates to a preparation method of ultra-fine calcium carbonate composite powder, belonging to the technical field of chemical material production and manufacturing. Background technique [0002] Calcium carbonate is a non-metallic inorganic filler with the largest amount and widest application. Due to its wide range of raw materials, low price, non-toxicity and high whiteness, it is widely used in plastics, rubber, papermaking, coatings and other fields. Due to the large reserves, good quality, broad market and good development space of calcium carbonate in China, the output and demand of calcium carbonate in China have increased rapidly in the past two decades, but most of them are used as ordinary fillers. Use, the pertinence of the product is not strong, generally belongs to the low-grade product, the performance improvement of the product is limited, so there are problems such as low added value of the product. Therefore, the develo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C3/04C09C3/06
Inventor 许峰
Owner 许峰
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