Mechanical methods of purification of waste water from enterprises of the porcelain and faience industry are considered. The prospects of using the electroflotation method with insoluble electrodes at the stage of separation of liquid and solid phases using more efficient flotation reagents are shown. This allows reducing the duration of wastewater treatment several times and increasing the degree of purification to 95 - 99%. Tab. 1, ill. 1, bibliography: 2 titles.
The possibility of using slime waste from chemical water treatment of nuclear power plants as lime has been investigated. The main properties of the obtained product are determined at various temperatures and rates of heat treatment. Tab. 1, ill. 5, bibliography: 3 titles.
At temperatures of 1200 - 1400 ° C, samples were synthesized from liquid radioactive waste (LRW) and basalt with a mass content of LRW oxides up to 30%. The obtained glass materials, along with the glass phase, contain crystalline phases (clinopyroxene of aegirine-hedenbergite composition and spinel). Glass materials synthesized from basalt and radioactive slag contain gelenite and silicophosphates, and with an increase in the basalt content in the samples, augite (aegirine-hedenbergite) also crystallizes. Crystalline phases are formed in the synthesized materials, capable of including radionuclides, which leads to a decrease in the rate of their leaching. Il. 4, bibliography: 8 titles.
Thermodynamic calculations have been carried out and the range of pollutants that can be formed during the process of strengthening glass products has been determined, and the level of their calculated concentrations has been established. Tab. 3, bibliography: 3 titles.
The possibility of utilization of galvanic sludge in the production of bricks has been investigated. The properties of the samples obtained meet the requirements of international standards. Il. 3, bibliography: 4 titles.
The parameters of submerged separating diaphragms made of ceramics, used to obtain iron powder by electrolysis from spent sulfuric acid solutions of rolled metal etching, have been investigated. Mathematical models of the main parameters of porous ceramic diaphragms are presented, the results of their use in electrolysis are indicated. Il. 4, bibliography: 2 titles.
It is shown that the introduction of an environmentally friendly hardening additive - molasses molasses - into the porcelain mass based on the Gusevsky stone makes it possible to increase the mechanical strength of the semi-finished product. Tab. 2, bibliography: 6 titles.
The effect of the concentration of Na and Ca chlorides and their mixtures, as well as of return water after filter pressing, on the properties of plastics, suspensions, semi-dry billets and high-voltage fired porcelain has been studied. It is shown that the use of retur ensures the preservation of the main technical properties of the semi-finished product and the quality of porcelain. Tab. 4, ill. 2, bibliography: 6 titles.
The possibility of using waste from coal mining and metallurgical slags, products of processing of oil shale and household waste for the production of ceramic building materials has been investigated and proved. Practical recommendations are given. Tab. 1, bibliography: 8 titles.
The conditions of formation and physical and mechanical properties of dust emissions, formed in the production of ceramic pigments, have been investigated. Practical recommendations are given. Tab. 1, ill. 1, bibliography: 8 titles.
