1 chemical compositions for industrial purposes, namely, magnesium-chloride for use as a raw material or as a catalyst or additive for the manufacture of cattle feed, drilling fluids, textiles, sugar, antifreeze agents, road salt and grit, absorbing and dust-binding preparations, other chemicals, artificial manures, cement, cleaning preparations, paper grindstones, leather-working and tanning preparations, and for the treatment and purification of water and flue gas; Chemical compositions in the nature of raw materials for use in the manufacture of refractory mortars, blocks, bricks, castable mixes, furnace linings or ceramic shapes for use in refractory furnaces