Functional calcium carbonate powder and production method thereof
A technology of calcium carbonate powder and production method, applied in chemical instruments and methods, inorganic pigment treatment, dyeing physical treatment, etc., can solve the problems of large oil absorption value, insufficient calcium carbonate accuracy, poor product uniformity, etc. Achieve the effects of preventing agglomeration, controlling costs, and processing difficulty and resistance
Inactive Publication Date: 2016-02-24
谭乔
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Problems solved by technology
[0004] In order to solve the above technical problems, the purpose of the present invention is to provide a functional calcium carbonate powder and its production method, to solve the problem of poor product uniformity and large oil absorption value of downstream customers caused by the existing calcium carbonate. Production process and other defects
Method used
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[0020] In order to describe the technical content, structural features, goals and effects of the present invention in detail, the following examples are given to describe the embodiments in conjunction with the accompanying drawings.
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Abstract
The invention relates to functional calcium carbonate powder. The powder is obtained by using calcite crude ore, and performing multistage physical grinding on the calcite crude ore, removing impurities and modifying the calcite crude ore; the ultrafine calcium carbonate powder is sieved by D97, and an acute angle ratio at an edge rib part of the powder is less than 15%. A production method comprises the following steps: 1) performing ore dressing to obtain a clean concentrate, sending the concentrate into a crusher; 2) performing preliminary breaking, crushing the concentrate to concentrate blocks; 3) crushing, sending the concentrate blocks to a grinding machine for multitime milling; 4) performing graded screening, selecting the ore powder which can accord with requirements by a grading apparatus; 5) winnowing and collecting, placing the ore powder which accords with the requirements in a modification apparatus; 6) modifying the ore powder by spraying with a modification apparatus; and 7) packaging and warehousing the calcium carbonate powder. According to the method, the calcite crude ore is used for multistage physical milling, and then is performed with impurities removal and modification, due to a finer grading process, the homogeneity of the particles is better, by employing spraying for modification, the surface of the particles is uniformly coated by a modifier in a mist form, agglomeration can be avoided, and an oil absorption value is smaller.
Description
technical field [0001] The invention relates to the field of ultrafine powders, in particular to a functional calcium carbonate powder and a production method thereof. Background technique [0002] Calcium carbonate is an inorganic compound, commonly known as: limestone, limestone, stone powder, marble, etc. Main ingredient: Calcite, a compound whose chemical formula is CaCO 3 , Neutral, basically insoluble in water, soluble in hydrochloric acid. Calcium carbonate is a common substance on the earth. It exists in aragonite, calcite, chalk, limestone, marble, travertine and other rocks. It is also the main component of animal bones or shells. Calcium carbonate is an important building material and is widely used in industry. [0003] In the traditional production line of functional calcium carbonate, in the process of pulverizing and ultrafine grinding, the number of grading tablets used is usually 45 pieces, and the uniformity of thickness and spacing varies, and the obtai...
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IPC IPC(8): C09C1/02C09C3/04
CPCC09C1/024C09C3/041
Inventor 谭乔申云凡
Owner 谭乔