Education of the republic of uzbekistan tashkent state technical university named after islam karimov

Geological Engineering
137 
and almost exclusive use of all its valuable components [1]. Natural minerals are irreparable and 
require close attention. Already today, we must think about what will remain for our children and 
grandchildren, on what basis they will build their happy future [2]. 
But at the same time, slags are valuable raw materials from which copper, iron, and noble 
metals can be extracted. For example, the slags of the copper smelting plant of the Almalyk 
Mining and Metallurgical Company (AMMC) contain 0.45-3.5% copper, 30-55% iron, a 
reasonably large amount of noble metals, and other valuable components. Of course, it is more 
expensive to extract these metals from slags than when processing raw ores and concentrates. 
However, two circumstances need to be considered: 1) Natural mineral inputs are not 
inexhaustible and have limited reserves; 2) Prices of non-metals such as copper, gold, iron, and 
some others have recently increased significantly this trend has continued to this day. Because of 
these circumstances, while simultaneously solving environmental problems, extracting these 
components from slags can be pretty profitable. 
 
MATERIAL AND METHODS. 
Proceeding from the state-of-the-art literature review, 
the following main direction on the creation of complex technology of processing slags of the 
reflective furnace and furnace after thermo-gravitational impoverishment of liquid slags with the 
subsequent granulation was offered: low-temperature restoration of slag with completion of the 
restored product enrichment and electric melting. 
The justification for this way is given in the previous sections. The choice of the main 
direction taking into account these factors can be carried out after carrying out trial tests.
However, it is necessary to carry out additional data on key parameters of iron restoration 
from slags. It is essential to determine the following parameters: 
- dependence of depth of restoration of iron on the consumption of reducer, temporary 
and temperature condition; 
- dependence of the amount of the received metal on parameters of the slag-recovery 
process; 
- interdependence of depth of restoration and quality of metal at various options of the 
process of restoration of slags; 
- dependence of parameters of the slag-recovery process on a way of preparation of slags. 
Proceeding from the aforesaid conducting laboratory trials on two types of the slags 
prepared in three ways is necessary. 
As initial materials, the Flash Smelting Furnace (FSF) and Reverberating Furnace (RF) 
common slags containing 32-36% silicon dioxide are used.
The main objectives and problems of conducting laboratory trials of low-temperature 
restoration of slags are: 
- definition of chemical and material characteristics of the received materials; 
- definition of the optimum temperature and temporary condition;
- definition of an optimum consumption of reducer; 
- definition of an optimum way of preparation of furnace charge.
Results of laboratory trials will be used for primary analysis of technological features of 
restoration of slags, comparison of laboratory data to theoretical, and development of the 
recommendation for carrying out trial tests. 

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