Patent ID: 11890572
Assignee: ASPIRING MATERIALS LIMITED
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 13:
14. A method of manufacturing a magnesium based hydrate composition comprising:
selecting a magnesium containing silicate source;
subjecting the magnesium containing silicate source that is selected to acid wash, to produce an acid digested solution;
subjecting the acid digested solution to a base wash by adding a base solution to the acid digested solution to produce a magnesium salt solution and, during this step, removing silica, iron or other metals and minerals from the magnesium salt solution;
completing a further base wash to separate magnesium hydroxide in solution and filtering the magnesium hydroxide in solution that is separated and recovering a magnesium hydroxide retentate and a permeate, the permeate comprising metal salt in solution;

mixing the magnesium hydroxide that is recovered with a solution containing NaOH and water to produce the magnesium based hydrate composition, said magnesium based hydrate composition comprising
60-90% by weight of magnesium hydroxide containing material;
1 to 10% by weight of said NaOH; and
greater than 5% of said water,
such that via said NaOH of said magnesium based hydrate composition, said magnesium based hydrate composition is configured to catalyze sequestration of carbon to said magnesium hydroxide containing material.