Intensification of vacuum filtration of iron ore slurry using CLEARON S 954 surfactant
The intensification and stabilization of vacuum filters for dewatering of iron ore concentrates (IOC) can be effective when using chemicals - surfactants for surface modification of particles filtered in such a way that on a pile-up step a thick cake is formed, and at the drying stage -water is removed effectively from its pores.
The technology of filtering iron ore concentrates slurry with the use of a nonionic type surfactant CLEARON S 954, developed by specialists of EWB s.r.o., can substantially improve the efficiency of disk vacuum filters.
To pilot test the effectiveness of the reagent CLEARON S 954 short-term industrial tests were taken at the ore dressing factory - Northern Iron Ore Enrichment Works (Kryvyi Rih, Ukraine).
Vacuum-filter was chosen for the test. Before the test the vacuum-filter completed 158 hours.
Slurry characteristics:
The experiments were conducted with the following parameters:
Point of entry of reagent CLEARON S954 - into drain tray of separators at the point most remote from slurry divider to provide more time in contact with slurry.
Effect of a dose of CLEARON S 954 reagent
on cake moisture indicators:
Effect of a dose of CLEARON S 954 reagent
on specific performance of vacuum filter:
The use of surface-active substance CLEARON S 954 allowed to achieve the following results in industrial tests at the ore dressing factory No 1 of Northern Iron Ore Enrichment Works:
The economic effect of introducing CLEARON S 954 reagent includes the following:
Additional factor:
The implementation of IOC vacuum filtration technology with the use of CLEARON S 954 reagent at Ingulets mining and concentration complex allowed, despite the crisis in the steel industry, to increase IOC production and sales up to 1 200 000 tons / month, which is 10 -15% above the design capacity of the complex.
PHYSICAL-CHEMICAL PARAMETRS | |
---|---|
Appearence | Turbid or clear liquid |
pH Value | 5-7,5 |
Iodine number | <2 |
Melting Point | <-20oC |
Solubility in water | Partially Sloluble |
Density (23oC) | 0.93 g/ml |
Viscosity (23oC) | Approx/ 50 mPa.s |
Environmental requirements: