Botswana Ash nameplate production capacity of soda ash is 300 000 tonnes per annum and for salt is about 650 000 tonnes per annum. Currently, our salt production is around 420 000 tonnes per annum and it is limited by the market rather than production constraints.
The builders that are used in detergents perform several functions namely the removal of magnesium and calcium ions that are prevalent in “hard water”, provide alkalinity to water, assist in dispersing soil in washing solution and prevent soil re-deposition on laundry.
- In the textile industry throughout the production process – as a cleaning agent, in refining and bleaching and adjust the pH during the drying process
- Non-ferrous metallurgy for the recycling of lead from spent batteries and in the recycling of zinc and aluminium
- In water treatment as a source of sodium and to adjust pH
- In the mining sector in the beneficiation and processing of a wide range of mineral ores and metals such as vanadium ore beneficiation, the production of cobalt and in the production of steel as a flux or de-sulphuriser (removal of iron ore in blast furnaces), among other uses.
- In the production of dyes, corn syrups, and as a food additive and in the manufacture of ethanol.
The salt produced at Botash contains between 98.0 % – 99.0 % sodium chloride. It is denoted by the symbol NaCI. The word salt is derived from the roman word for salt crystals sal is derived from Salus, the goddess of health. Salt has over 14 000 domestic and industrial applications.
At Botswana Ash, salt is a complementary product resulting from the production of soda ash. There are three types of salt that are produced and sold at Botswana Ash namely chemical grade coarse salt, food grade coarse salt and fine salt. The salt produced at our plant is amongst the purest found anywhere in the world.
- As a food preservative
- To add flavour to food as a spice
- To carry essential nutrients such as iodine and selenium in humans and animals
In terms of industrial applications, some of the uses of salt include:
- The softening of “hard” water, that is removal of elements such as magnesium and calcium that contribute to water hardness
- The bleaching of pulp to manufacture paper
- The standardization of dyes batches in the textiles industry
- As a de-icer in Snow Belt areas in the developed world where snow is a common phenomenon.