Prue Zinc Sulfide

Zinc sulphide becomes a luminescent material when activated with a suitable activator. This property of ZnS has several applications. For example, it is used as a phosphor in cathode ray tubes.

The phosphorous nature of ZnS makes it useful for various electronic and decorative applications. It is also used as an infrared optical material, transmitting wavelengths ranging from visible to just over 12 micrometers. It can be shaped into a lens or used as a plane optical window. It is also used as a pigment for paints, rubber, and plastics.

A kind of method of producing high-purity zinc sulphide with the vat powder filter residue comprises following concrete steps: weighing 495kg vat powder, the content of zinc hydroxide is 297kg in the filter residue of conversion vat powder, and, be configured to suspension liquid with the pulverizing of vat powder filter residue, dispose dilute hydrochloric acid solution simultaneously; Is successively to put in first corrosion-resistant reactor at 1: 0.94 gained suspension liquid and dilute hydrochloric acid solution according to zinc hydroxide and hydrogenchloride pure substance mass ratio, reacts under stirring, and obtains containing the mixed solution of zinc chloride; The mixed solution that gained is contained zinc chloride filters through first strainer, obtains the clarifying filtrate that contains zinc chloride; The clarifying filtrate that contains zinc chloride in second corrosion-resistant reactor with an amount of zinc hydroxide reaction, remove impurity, and make the muriate in the solution all be converted into zinc chloride, filter through second strainer and obtained purified liquor zinci chloridi, the pure substance quality of the zinc chloride.

Again purified liquor zinci chloridi and sending in the vulcanizing apparatus, feed the improvement hydrogen sulfide that barium sulfide waste residue and hydrochloric acid reaction ejected at 1: 0.05 according to zinc chloride and hydrogen sulfide pure substance mass ratio, carry out vulcanization reaction, obtain the mixture of Containing Sulfur zinc precipitation and hydrochloric acid dilute solution; Obtain clarifying hydrochloric acid dilute solution and zinc sulphide filter cake through second strainer filtration; Clarifying hydrochloric acid dilute solution is returned and is recycled; The zinc sulphide filter cake is pulverized and is obtained high purity zinc sulphide powder product through washing machine washing drying, pulverizer, and the zinc sulphide pure substance quality.