ISSN 1070-4272, Russian Journal of Applied Chemistry, 2006, Vol. 79, No. 6, pp. 884!889. + Pleiades Publishing, Inc., 2006.
Original Russian Text + V.I. Samoilov, A.N. Borsuk, A.A. Kishlyanova, 2006, published in Zhurnal Prikladnoi Khimii, 2006, Vol. 79, No. 6, pp. 896!901.
AND INDUSTRIAL INORGANIC CHEMISTRY
Improvement of the Technology for Processing
of Sulfate Solutions Produced in the Stage of Sulfuric
Acid Breakdown of Beryllium Ore Concentrates
V. I. Samoilov, A. N. Borsuk, and A. A. Kishlyanova
Ulba Metal Works AO, Ust Kamenogorsk, East-Kazakhstan oblast, Kazakhstan
Received March 14, 2006
Abstract-The possibility of purifying a sulfate solution to remove silicon and calcium by concentrating
beryllium in this solution was studied.
The classical sulfuric acid technology of beryllium
recovery from low-grade ores has essential drawbacks.
These are the low beryllium content in the sulfate so-
lution formed in the stage of sulfuric acid breakdown
of granulated fusion cakes produced from the stock
composed of beryllium ore concentrates, soda ash, and
limestone (approximately 132gl
), and the high con-
tent of silicon and calcium in this solution (about sev-
eral tens of percent relative to beryllium) .
In this study, we tested three procedures for con-
centration of beryllium in a sulfate solution. Accord-
ing to the first procedure, the granulate from the Ulba
Metal Works joint-stock company was decomposed
by the scheme presented below. (The shop granulate,
obtained by fusion of beryl and bertrandite3phenacite3
fluorite concentrates with soda and limestone, con-
tained (wt %): Be 2.21, Al 6.99, Fe 2.28, Ca 10.48,
Si 19.03, Mn 0.40, and Cr 0.015.)
In the breakdown of the shop granulate, it was
sulfated by mixing a weighed portion of the granulate
(25 g) with water at a rate of 0.8 ml per 1 g of
the granulate (see scheme). The thus obtained water-
granulate pulp was treated with 93% sulfuric acid
(0.8 ml per 1 g of the granulate). In the first run,
Technological scheme of beryllium concentration in sulfate solutions.