RESEARCH TEST ON STABILITY OF XANTHATE LAYER ABSORBED ONTO SURFACE OF MALACHITE

Malachite is the most common occurrence of oxide coppor ore.Therefore,malachite has been taken as sample for research tests to study the mechanism of floatation of oxide copper ore.In the tests,the quantity of xanthate absorbed onto the surface of malachite was measured;the composition of xanthate remained in malachite ore pulp was analysed;the influence of agitating time duration on activeness of malachite to absorb xanthate and the stability of xanthate layer absorbed onto the surface of malachite were determined.Test results show that malachite after being treated by sodium sulphide and wss(a kind of sulphide)is less active to absorb xanthate,but the xanthate layer absorbed onto the surface of malachite is more stable,thus the floatability of malachite is obviously increased.