Usage:    A wide range of uses, chemical, pharmaceutica Usage:    A wide range of uses, chemical, pharmaceutical, food, metal surface treatment, metallurgy, petroleum refining, papermaking, printing and dyeing, glass, leather, enamel, etc are applied Production process:

(1) filtering seawater

(2) to remove excess sodium hydroxide, calcium and magnesium ions, filter

(3) using reverse osmosis membrane production technology in the brine ? SO4 (out) -

(4) add, remove excess calcium ions, sodium carbonate ions, filtering. Excess barium

(5) stir-in hydrochloric acid, remove excess carbonate ions

(6) heating drive CO?

(7) into the ion exchange, further removes calcium, magnesium ions

(8) electrolysis