Bentonite clay is also used in foundry sands production. The following types of bentonite are used:
- crude bentonite clay;
- bentonite powders
Bentonite powders for foundry sands produced from bentonite of Dash Salakhli deposit, meet the requirements of the GOST 28177-89 “Foundry bentonite clays. General specifications” possess the following quality characteristics:
| || ||P1Т1||P2Т1|
|Compression strength, not less||Kgs/sm2||0,95-1,1||0,95-1,1|
|Breaking strength in moisture condensation zone, not less||Kgs/sm2||0,03||0,024|
|Thermal stability, not less||Un||0,8||0,8|
|Mass fraction of montmorillonite, not less||%||85,0||85,0|
|Moisture mass fraction of ||%||7-8||7-8|
|Sieve residue with mesh size, not more|
The largest customers of Dash Salakhli bentonite products for foundry are: “Bobruyskiy engineering plant” Inc., “Minskiy plant of heating equipments” Inc., “Olenegorskiy mechanical plant” Inc., “Tekstilmash” Inc., RUP “Gomelskiy foundry “Tsentrolit”, RUP “Gomelskiy agricultural engineering industry “Gomselmash”, RUP “Polesyeelektromash”, FGUP “PO Uralwagonplant”, RUP Plant “Mogilevliftmash”.
Production technology of «AzRPI» JV is covered by patents.
Bentonite powders are packed in Big Bags 950 kg and shipped in bulk in gondolas.
Bentonite clay is shipped from Gazakh station of Azerbaijan railway.