Aluminum is the most common element in the earth's crust. Most of the aluminum is in a complex form in our soil. The raw material used is Bauxite and, in some cases, white clay.  A significant part of raw material production of coagulants occurs during the production of aluminium profiles and as a result of galvanizing processes.

Depending on the various fields of application, the purity demand of the raw material is very important, eg. potable water production and the paper industry require bauxite.  Due to a relatively high iron concentration and other impurities, its direct use as a raw material is not possible for pure aluminium coagulants.  In the 'Bayer Process', bauxite is refined to pure aluminium oxide and during this production process the aluminium hydroxide is separated.

By dissolving this pure aluminium hydroxide in sulphuric or hydrochloric acid, aluminium sulphate and chloride are produced. By dissolving in caustic soda, sodium aluminate is produced.

Minor quantities of aluminium coagulants are based on side streams from other production processes.