重晶石粉Barite powder硫酸鋇是一種化學性質(zhì)非常穩(wěn)定的物質(zhì)，不溶于水，也不溶于鹽酸和硫酸，熔點1580℃。比重4.35，莫氏硬度3—4。由于硫酸鋇具有的特性，所以是摩擦材料中普遍應(yīng)用的一種摩擦性能調(diào)節(jié)劑。Barium sulphate is a kind of chemical substances is very stable, insoluble in water, insoluble in hydrochloric acid and sulfuric acid, melting point's 1580℃. density of 4.35, 3-4's hardness. Due to the characteristics of Barium sulphate is widely used in the friction material of a kind of friction performance regulator.現(xiàn)在應(yīng)用的硫酸鋇的來源有兩個，一是沉淀硫酸鋇，另一種是重晶石粉。Now the application of Barium sulphate source has two, one is precipitation Barium sulphate, another kind is barite powder.晶石粉是由重晶石直接粉碎而成。重晶石是一種天然的化合物，主要成分是硫酸鋇,分子式BaSO4。天然重晶石由于產(chǎn)地的不同，礦的品位不同。優(yōu)良的重晶石礦石含硫酸鋇≥90%，甚至達到96%以上。Barite powder is crushed by barite directly. Barite is a kind of natural compounds, main component is Barium sulphate, BaSO4 formula. Due to the different origin of natural barite so it is grade different. Excellent barite ore containing Barium sulphate, ≥90% even above 96%. 沉淀硫酸鋇是通過化學方法生產(chǎn)的主要成分為硫酸鋇的化合物，其主要原料是天然重晶石。生產(chǎn)沉淀硫酸鋇的工藝流程是：Barium sulphate precipitated is the main analysis of production through chemical composition, its main compounds of barite ore material is natural barite. The process of production of Barium sulphate precipitated is:天然重晶石粉碎-----和煤粉混合------高溫煅燒------冷卻------用水浸出-----過濾除去沉淀------加入芒硝溶液（Na SO4）沉淀-----過濾分離-----干燥粉碎-----成品Natural Barite powder- And coal - high temperature calcination- Cooling-remove precipitation - Water leaching -After adding Na SO4 precipitation- Filtration separation- Dry grinding- finished goods主要化學方程式：Main Chemical formula:BaSO4 2C = BaS 2CO2 ↑BaS Na SO4 = BaSO4 ↓ NaSBarite powder and precipitation Barium sulphate technical indices:

Items	Barite powder	First class	Accepts
Volatile 105℃ %≤	0.2	0.3	0.5
Hydrotrope content%≤	0	0.3	0.5
Moisture %≤		0.15	0.15
BaSO4 content%≥	95	98	96

從以上說明可以看出，重晶石粉和沉淀硫酸鋇的化學成分是相同的，含量稍低，但是重晶石粉生產(chǎn)工藝簡單，成本低。沉淀硫酸鋇生產(chǎn)工藝復雜，成本高，而且其中易含有工藝過程中必須使用的，沒有去除徹底的，在摩擦材料中起負作用的酸、堿、鹽。從直觀上看，重晶石粉干爽，易混合均勻。沉淀硫酸鋇粘滯，易結(jié)團，不易分散和混合均勻。From the above instructions can see, chemical composition of barite powder and the chemical composition of Precipitation Barium sulphate is same, low content,But barite powder production process is simple,low cost. Precipitation Barium sulphate production process is complicated, high cost and contains acid, alkali, salt. From the intuitive, barite powder dry, mixing easy. Precipitation Barium sulphate viscous, easily scattered and mixing.所以只要選擇品位高的粒度在325目以上的重晶石粉，就完全可以代替沉淀硫酸鋇，而且可以起到比沉淀硫酸鋇更好的效果。

So as long as the choice of the high grade size in 325m above barite powder, it can completely replace Barium sulphate precipitation, and can have better effects than Barium sulphate precipitated