SU16659A1 - Method of producing titanium dioxide concentrate - Google Patents

Description

In technical literature (amer. Patents №№ 1.171.542, 1.184.131, 1.201.541; engp. Patent1 №№, for 1922;

Germ pat Nos. 337.395, §37.396, 337.397, etc.) described a number of methods for producing titanium dioxide {Ti by fusing titanium ores (ilment) with sulphates and carbon and spiking treatment of av with dilute acids to dissolve the resulting sulfur iron. Thus, for example, according to pa. No.1.171.542, the mixture, titanium ore, coal and sulphate, is fused

in electrical, leaks. The resulting

when sodium sulfate is reduced, sodium sulfate reacts with iron and with titanium oxide to form iron sulfide atri and sodium titanate. The alloy is treated with acid and gives a precipitate with 800/0 oxitanium. Nopent No. 1.184.131 fusion is made with sodium bisulfate and the alloy is boiled with sulfuric acid until all the oxide, titanium, is converted to a solution. According to the patent, No. 1.201.541, the ore is fused with sulfur and pure sodium, and the resulting slurry is electrolyzed in an aqueous solution of common salt. The sulfides dissolve and titanium oxide is produced.

in the draft. According to British patent L 181.775 for 1922, the ore, coal and sodium sulphate are heated below the melting point of the mixture, after which it is processed with hydrochloric or sulfuric acid to decompose iron. In the proposed method intended for the simultaneous production of dioxide: 7 tane and barium chloride, the titanist ore (ilmenite) is fused at high temperature with barium sulphate (Ba SOi), calcium chloride ((7a (7) (C) in a stream of nitrogen with subsequent leaching with boiling water.

The method consists in that a mixture of ilmenite, barium sulfate, chloride chloride and coal in a stream of nitrogen is fused in an electric furnace at 1100 ° C for 2 hours. At the same time, barium sulphate is reduced by coal to barium sulphide, which reacts with calcium chloride to form barium chloride and calcium sulphide; the latter reacts with iron and oxidized titanium to form iron sulfide and calcium titanate. The alloy is leached out of water and filtered. The filtrate contains all the barium chloride, which is obtained by evaporation and cristappization, ai; the residue is treated with acid and converted to an iron solution. / Finally, a titanium concentrate is obtained, which is processed in a manner already known to pure titanium oxide and on; titanium white. The whole process can be represented as follows:

Fe OliO + Ba 80 + Sa Sa OTGOa + Bi. . 1 Ba Ba. . . . . .2

Ba 84-Sa S1g Ba C, - | -Ca S. . . .3

Ca 8 - {- Fe OTGO Ca OTiOz- -FeS. .. four

In the case when npon; ect5 leads to the fate of 11 Calcium Oxide, an alloy is produced (Fe OTGO - {- JBa 50 - {- 4C: Ba OTi02 - {- FeS -4CO), which is processed by grinding with a weak hydrochloric acid sulphide dissolving agent: iron and non-dissolving titanium barium. The latter is treated with C1 at 400 ° to form; barium chloride and titanium chloride .;

According to the author ,. The described method makes it possible to say titus. a new concentrate with titanium dioxide content not lower than, of barium chloride in amounts up to the weight of taken barite, iron — from 45 to the amount contained in the iron ore, which is easily separated from leached residues by treatment with hydrochloric or sulfuric acids and, finally , use heat from furnaces (1000 - 1100 ° to factory production of barium chloride for the process of chemical replacement of iron by calcium.

The subject of the patent.

A method for producing a titanium dioxide concentrate by melting ilmenite with sulphates and coal with a subsequent treatment and removal of acids; to dissolve acids to remove iron sulfide, characterized in that the ilmenite is fused with barium sulfate, calcium chloride and coal in a stream of nitrogen at a high temperature and The obtained alloy is leached with boiling water, after which it is processed in the usual way with diluted acid: oto. .1Г