Tungstate Scheelite Ore Production Methods

The present invention provides a use of tungstate scheelite ore production methods. Specific steps are as follows:

1) Prepare a slurry: First scheelite ore powder, hydrochloric acid and water were added to the slurry preparation tank, mixing, under conditions of 40 ~ 50 ℃ at room temperature or heated to the specific gravity of the slurry was adjusted to 1.15 to 1 .30, adjusted to an acid value of 110 ~ 130g / L;

2) The electrochemical decomposition treatment: after deployment good electrochemical reactor slurry input, namely the electrodes pass into 2 ~ 6V, the current density of DC volume of 300 ~ 1000A/m3 in the feed solution under stirring decomposition treatment 1 to 2 hours to a final acid value of 20 ~ 40g / L, a mixture of CaCl2 and H2WO4 containing feed solution;

3) Wash the filter: B prepared by mixing liquid input filter, and pass into the hot water washing, filtration, that was solid tungsten acid products.

Since the invention based on the traditional acid decomposition method based on the increase pass into direct current, at low temperatures of ore electrochemical treatment process, greatly improving the efficiency of the decomposition of scheelite, hydrochloric acid consumption reduced by more than half to reduce production costs 50%, an increase of productivity / 3. Thus with hydrochloric acid consumption is low, the reaction can be carried out at room temperature even lower, both to avoid volatilization of hydrochloric acid and air pollution, but also greatly reduces the workload and processing costs of wastewater treatment; environmental pollution and improve productivity, reduce production costs and other characteristics. To overcome the conventional acid decomposition excess of hydrochloric acid to be added and reacted at a high temperature state, both air pollution, waste water and high acid number, the processing workload, the productivity is low, production costs are high and other ills.

 

• < Prev
• Next >