Viduetsky M.,Ural Federal University |
Maltsev V.,Ural Federal University |
Garifulin I.,Ural Federal University |
Purgin A.,Ural Federal University |
And 3 more authors.
IMPC 2014 - 27th International Mineral Processing Congress | Year: 2014
CFM pneumatic flotation machines were developed by the Institute of Materials Science and Metallurgy, UrFU, and designed to concentrate a wide range of ores and man-made materials. A key principle of work is pulp preparation for flotation owing to its saturation with finely dispersed air bubbles in ejectors. CFM plants, their advantages over domestic and foreign prototypes are described. CFM pneumatic machine commercialization resulted in: - machines demonstrated high floatation efficiency for concentration of rebellious pyrrhotite-bearing copper and zink by simultaneous floatation of copper and zinc minerals and depressing pyrrhotite. CFM-1400M introduction allowed simplifying and optimizing the flow chart and increase extraction of copper - by 5.4%, zinc - by 9.5% and improve the quality of copper (3% Cu) and zinc (1.5% Zn) concentrates. - due to copper pyrite concentration by using CFM 1400M overall copper recovery was increased by 1.5 %, and the content of copper in concentrates - by1%. According to the results of pilot runs, the use of CFM flotation for zinc cakes concentration strongly intensifies the process of cleaning water-soluble metal compounds and, thereby, increases the efficiency of flotation concentration and subsequent milling. CFM machines showed higher specific capacity (three or four times higher) (both for feed material and froth product). Specifically, CFM froth product has higher content of useful elements (silver by 0.014 % abs. zinc by 0.31% abs.) and better extraction (silver by 6.08% abs., zinc by 0.31% abs., and sulfide sulfur by 13.7 %). Sulfide sulfur content of CFM product chamber as compared to mechanical flotation machines is two times lower (0.48 vs. 0.95 %).
Domanskaya I.K.,Ural Federal University |
Tropnikov D.L.,JSC Svyatogor
Tsvetnye Metally | Year: 2014
Standard tests of waste copper slag (JSC "Svyatogor"), used as fine filler for building materials, were carried out at the laboratory of the Chair "Technology of binding materials and construction products" of Ural Federal University. The slag meets all normative requirements for waste products of ferrous and non-ferrous metallurgy, used for highways building. Waste cooper slag grain fineness corresponds to the group of large sands. The slag has stable structure against silicate and magnetite decays, but has no metal contamination. It can be used for road building without restrictions. Application of this slag in concrete and solutions manufacturing is limited, because its grain fineness does not meet the normative requirements. Copper slag has high particle density (more than 3000 kg/m3) and low water requirements. Practically, required specific water discharge for watering of slag particles surface (water requirements) is two times less, than for natural quartz sand of similar size. All other things being equal, it contributes to increasing of concrete composite strength, containing this slag as a filler. However, it has a negative impact on composite formability conditions. Preliminary fractioning of waste copper slags and its use in small amounts in composition of combined sands is recommended for manufacturing of concretes, melts and dry building materials.