Sand Sillica and Gravel
Typically the raw product goes through many stages of treatment such as crushing, pre-screening, primary / secondary density separation, drying, washing, bleaching. Flowrox abrasion resistant pump and valves are ideal for isolation and control of these processes.
As part of some sand, silica and gravel operations, the material undergoes washing and treatment using aggressive chemicals such as Sulphuric acid.
In this environment standard isolation valves would deteriorate quickly leading to plant failure. Flowrox non-metallic PVEG range are constructed in chemical resistant Polyamide.
Primary and secondary density separators using pneumatic actuated pinch valves to control the flow through the system using signals from instrumentation in the separator silo.
Silica Sand deposits are particularly difficult material to handle as they have unique has very distinct characteristics of size shape chemical composition requiring individual attention to detail.
Industrial grades of silica sand have a high content of silica (up to 99%) normally in the form of quartz, the most common crystalline form of Silicon Oxide.
Silica sand is produced from loosely consolidated deposits and from weakly cemented sandstones.
Silica is hard, chemically inert and has a high melting point, essential for many industries.