STUDY OF THE PROCESS OF OBTAINING CALCIUM NITRATE - PRODUCTS OF NITRIC ACID DECOMPOSITION OF CALCIUMCONTAINING SLUDGE
Journal of Contemporary Issues in Business and Government,
2022, Volume 28, Issue 1, Pages 435-439
AbstractIt is known that calcium nitrate is an effective nitrogen fertilizer that provides
high yields in all climatic and soil conditions. The effect of the application of calcium nitrate can
be directly related to nitrate nitrogen and calcium in water, either separately, or in most cases as
a combined action of these two nutrients.
When calcium nitrate is obtained by decomposition of calcium-containing sludge from
the water treatment plant of Farg’onaazot JSC with non-concentrated nitric acid (at least 57%
HNO3), intensive, stable foaming is observed, which leads to a decrease in equipment
productivity. When developing a technology for obtaining new types of suspended fertilizers
based on calcium nitrate, the process of foaming during nitric acid processing of calciumcontaining
sludge was studied.
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