Foshan Bozhen Chemical Co., Ltd.

lithopone

Product nature: lithopone is also called lithopone, is a very stable network molecular structure. White powder, non - toxic, no corrosion, insoluble in water, with hydrogen sulfide and lye do not work, acid dissolved in the production of hydrogen sulfide gas. The product has good coloring rate and covering rate, good weather resistance, when the sulfide gas does not blacken. it can replace part of titanium dioxide.


Product use: a large amount of paint, paint, pigment, printing ink, rubber, also used in enamel, plastic, paper and other coloring inorganic white pigment, widely used in polyolefin, vinyl resin, ABS resin, polystyrene, polycarbonate, nylon and polyoxymethylene and other plastic and paint, ink white pigment. In polyurethane and amino resin, the effect is poor, in the fluorine plastic is not very suitable. Also used in rubber products, paper, varnished, tarpaulin, leather, watercolor paint, paper, enamel, and so on. Used as an adhesive in bulb production. 

Synthetic method:
The natural barite with more than 95 % of barium sulphate is mixed with anthracite 3: 1 ( mass ) into a reduction furnace with a diameter of about 2 cm, the temperature in the front section of the control furnace is 1000 ~ 1200 , the later stage is 500 ~ 600 , the conversion rate is 80 % ~ 90 %, the reaction conversion rate is 80 % to 90 %, the temperature is over 65 , the barium sulphide content is 701 %, and then the reaction of zinc sulfate is added, the content of zinc sulfate is more than 28 %, ph = 8 ~ 9, the barium sulfate and zinc sulphide with density of 1.296 1.357 g / cm3 are obtained The reaction liquid is pressed by plate and frame, and the filter cake is lithopone, the water content is not more than 45 %, and it enters the drying roaster to change the crystal form of lithopone, and then acid pickling is used at 80 . Finally, by water washing, reinforcing agent, filter press, drying and milling. 
The calcined product obtained by the method of ordinary lithopone is made of pulp, which is treated by sodium silicate, aluminum sulfate or sodium aluminate and surfactant, and then filtered, washed, dried and crushed. 
Technical indicators: zinc sulfide: 28 %; Zinc oxide: 0.20 %; Volatile: 0.20 %; Water solution: 0.30 %; Screen: 0.05 %; Ph: 7; Oil absorption: 9.8 %; Decoloration power: 100; Covering power is not less than standard sample: 5 %. 

Product model: BZ - 301

Quality standard: national standard

Package: compound paper bag, net weight per bag.