SU63253A1 - The method of melting high-silicon honey containing materials - Google Patents

Description

use of iron; obsessed fluxes, is characterized in that pyrite butts containing copper or copper with noble metals are used as the latter.

The copper-bearing materials that are smelted in the reflective furnaces of the Kazakh SSR plants: Balkhashskiy Eetrat, Karsakpaysky concentrate and Zheskazgansk ore contain much more silica than is required for the reflective smelting process.

For slagging excess silica, contained in copper concentrates and ore, iron ore is added during smelting.

A useful component found in iron ore in the smelting of copper-containing materials is iron in oxides. Therefore, it is desirable to have a material with a high content of iron oxides “as low as possible of silica.

Such conditions are fully met by the waste of sulfuric acid plants in OTBlawax - pyrite cinder.

According to the analysis contains: iron - 50-60%; k, belt of seed - 3-10%; gold - 1.5-2 g; silver - 20-25 g; copper - 0.5-1.0%, sulfur - 2-6%,

It can be seen from the above composition that the silica in the Karsakpay iron ore is much more, and the iron is less than in the calcine.

The presence of copper, gold, and silver in the cinder provided that the extraction of these metals makes the cinder more valuable than Bakalva or other iron ore. ; Out of the ruttafm, the possibility of replacing iron oxides in iron ore with iron oxides found in butts and the possibility of extracting gold, silver, copper from the butts of gold, silver, copper was established.

As studies have shown, copper in cinders can be found in the very races of the world.

SnO; GuQ; CtiFeSs; CuaS; CuSO.

When smelting in a reflective furnace, there will be reactions with the transition of copper to matte.

Cu, derived from the decomposition of sulphate, as well as being in the calcine, will react with the present FeS charge to form CuaS:

6CuO + 4FeS 3Cu2S + 4FeO- | -SO2.

Cu2O will also react with FeS by the reaction:

CuaO + FeS CuaS + FeO.

CuFeSa contained in the candle will decompose:

2CuFeS2 - CU2S -Jf- 2FeS + S.

CuaS, which is in the cinder, and also formed by the above-mentioned M, is the main component of the matte.

Gold, silver, as is well known, accumulates in matte.

As studies have shown, the main mass of iron n |

welding as FeaOa. If FeS is present in the mixture, FeaOs will be reduced to FeO. The latter, reacting with SiO2, will give the main chemical compound of slag (the same as soured; lesh) ...

All the above reactions occurring in the process of smelting in the reflective furnace confirm that the process of smelting copper-containing D / 5 materials with cinders will proceed normally; copper, gold, silver will be transferred to the ground, from which, in the process of converting, copper will be produced with content of precious metals. The iron will be used for the slagging of silica. Sulfur will go partly to the formation of shcheynoobrazovanna, partially - to the restoration of oxides.

All theoretical substantiations were tested in practice when smelting Perm piratite fires in reflective furnaces of the Balkhash smelter, and it was used: copper - 85-90%, gold - 95%, silver - 85% Thus, the problem of using complex of useful metals that are part of ball stumps.

Subject invention

The method of melting high-silicon copper-containing materials using an iron-containing flux, characterized in that nHipHiTTHbie cinders containing copper or copper and noble metals are used as the latter.