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Chemical products

We define chemical products as materials with a defined composition of various components which are not listed separately. This can be pure materials as well as mixtures. This definition is not clear-cut and may have different meaning depending on the context. Chemical products can be differentiated terminologically regarding to their different degree of purity. Chemicals with a high purity are termed fine chemicals while the term technical chemicals names materials with a lower purity.

Chemical products e.g. are natural rubber, paint, cosmetics, pharmaceuticals, synthetic fertilizer, adhesives, building protective agents, cleaning agents and pyrotechnics. In processing of these substances chemical conversion is not a necessarily step but mostly physico-chemical procedures like mixing, milling, screening, extraction or emulsifying are used.

The first chemicals employed in industrial processes were sulphuric acid, soda, chlorinated lime, synthetic fertilizer, plastics and colourants. These were followed by pharmaceutical agents like acetylsalicylic acid, chloral hydrate and ether.

For the gentle treatment of this high grade chemical products in separation processes basically a screening process has to be chosen which processes the granulates resp. powders carefully without producing additional dust.