Summary:Traditional papermaking fillers are mainly divided into two categories: natural fillers and artificial fillers. Natural filler refers to the natural mineral dep
Traditional papermaking fillers are mainly divided into two categories: natural fillers and artificial fillers. Natural filler refers to the natural mineral deposits by mining and mechanical processing and the use of filler, such as talcum powder, white soil, titanium dioxide, gypsum, etc., artificial filler refers to the chemical reaction and made or the use of chemical plant by-products of the filler, such as precipitation calcium carbonate, barium sulfate, paper sludge, calcium silicon filler. The filling can not only save the fiber material and reduce the cost, but also improve the optical properties and printability of the paper, and meet the requirements of some special properties of the paper.
Kaolin
Kaolin texture is soft, the appearance of high whiteness. In the paper industry, the choice of kaolin as filler is because kaolin in pulp is not easy to react with other additives, filling the gap between the wood fibers in the paper, so as to retain between the fibers. In addition, kaolin particle size is small, easy to flow, can ensure the density of paper and paper smoothness. Kaolin is often used as a filler in the paper industry. It is widely used because of its low price, strong practicability and relatively good whiteness value. Kaolin is easy to handle and disperse. The use of kaolin gives the paper a high density and reduces coating penetration. Kaolin is often used for super calender paper making.
Talcum Powder
Talc powder has high whiteness value, high density, high refraction, and stable chemical properties. It is suitable for acid paper making, and it is suitable for neutral paper making with CaCO3.Small friction coefficient, small wear on the paper machine, prolong the service life of the paper machine, and improve the quality of the paper roll; Lamellar structure helps retain the page and improves the opacity, smoothness and printing performance of the paper. Talc powder is used for rotary gravure printing, plastic plate printing and special coated paper.
Ground Calcium Carbonate
The use of heavy calcium carbonate is mainly due to its low price, high brightness, large gray component, easy coloring, sizing and other advantages, and can improve the opacity of paper, glossiness, improve the ink absorption of paper. GCC is an inorganic filler commonly used in medium and alkaline paper making. With the gradual transformation of the paper making industry from acid paper making to medium and alkaline paper making (medium and alkaline paper making has less loss on paper machine than acid paper making, and is more beneficial to environmental protection and water conservation), the demand for GCC is increasing gradually.
Recommendation Of Paper Making Grinding Equipment
1.MTW European Grinding Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding technology and concept, and combines the suggestions of 9158 customers on grinding mills. This grinding mill perfectly satisfies the production demands of the customers on 200-33μm (80-425Mesh) fine powder.
2. SCM Ultrafine Grinding Mill is a new superfine powder (325-2500 mesh) production equipment developed through accumulating years of experience in grinding mill production, absorbing Swedish advanced machine manufacturing technology, and undergoing many years of tests and improvements. The SCM Ultrafine Grinding Mill is the result of combination of advanced Chinese and Swedish technologies. Meanwhile, it symbolizes the new development and new science in the grinding world.
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