Preparation method of modified cerium-based rare earth polishing powder
A rare earth polishing powder, cerium-based technology, applied in polishing compositions containing abrasives, etc., can solve the problems of unstable grain growth, scratches, and uneven particle size.
Inactive Publication Date: 2017-01-04
BAOTOU HAILIANG TECH
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Problems solved by technology
[0003] In order to solve the above-mentioned technical problems of unstable grain growth, uneven particle size, large particles after jet crushing, and scratches when the customer polishes the glass, the present invention provides a crystal grain growth stable, formed particle size Preparation method of modified cerium-based rare earth polishing powder that is uniform and has no large particles after jet crushing, and is not easy to cause scratches when customers polish glass
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[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0027] see figure 1 , is a process flow diagram of an embodiment of the preparation method using the modified cerium-based rare earth polishing powder provided by the present invention.
[0028] The preparation method 1 of the modified cerium-based rare earth polishing powder comprises the following steps:
[0029] Step S11, obtaining lanthanum cerium fluorocarbonate: obtaining lanthanum cerium fluorocarbonate through the reaction between hydrofluoric acid, l...
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Abstract
The invention provides a preparation method of modified cerium-based rare earth polishing powder. The preparation method of the modified cerium-based rare earth polishing powder includes the following steps that step one, fluorine lanthanumand cerium carbonate is obtained: hydrofluoric acid, lanthanumand cerium carbonate and phosphoric acid perform reaction to obtain the fluorine lanthanumand cerium carbonate; step two, the fluorine lanthanumand cerium carbonate is baked to obtain fluorine lanthanumand ceriumoxide: the fluorine lanthanumand cerium carbonate is put in a sagger, is gradually heated to reach the temperature of 800-1500 DEG C, then is baked at constant temperature and then stays in a gradually cooled kiln for 15-25 hours. step three, the fluorine lanthanum and cerium carbonate is smashed: the roasted fluorine lanthanum and cerium carbonate is put in an airflow smashing machine and is broken up through airflows, and the granularity is controlled to be 1.0-1.5 microns. The polishing powder prepared by adopting the preparation method of the modified cerium-based rare earth polishing powder can improve the grain growth situation, grain growth is performed according to in face-centered cubic mode, no sharp angle exists, and accordingly the scratch phenomenon occurred during usage performed by customers is avoided.
Description
technical field [0001] The invention belongs to the technical field of rare earth polishing powder preparation, and in particular relates to a preparation method of modified cerium-based rare earth polishing powder. Background technique [0002] Polishing powder is usually composed of cerium oxide (VK-CE01), aluminum oxide (VK-L30F), silicon oxide (VK-SP50F), iron oxide, zirconia (VK-R30F), chromium oxide and other components. Different materials Different hardness has different chemical properties in water, so the use occasions are different. Alumina and chromia have a Mohs hardness of 9, ceria and zirconia 7, and iron oxide is even lower. Cerium oxide and silicate glass have high chemical activity and comparable hardness, so they are widely used in glass polishing. The problem existing in the preparation process of rare earth polishing powder at present is that after the raw material synthesized by this method is roasted, the grain growth is unstable, and the size of the...
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IPC IPC(8): C09G1/02
CPCC09G1/02
Inventor 王新刚罗爱清
Owner BAOTOU HAILIANG TECH