Title: Process for preparing chrome yellow with galena
Application Number: 88109758 Application Date: 1988.12.22
Publication Number: 1043686 Publication Date: 1990.07.11
Approval Pub. Date: Granted Pub. Date: 1993.06.09
International Classifi-cation: C01G21/18,C09C1/62
Applicant(s) Name: Chemical Research inst. Dujiangyan city Address:
Inventor(s) Name: Jin Peng, Xie Fuzhong
Attorney & Agent: HUANG YOULING
Abstract:
     This invention features that the chrome yellow is obtained by direct synthesis of the aqueous solution of lead nitrate obtained by two-stage counter-current immersion of galena in diluted nitric acid with the solution of sodium chromate obtained by calcining chromite. All its equipment are ordinary pressure once used in chemical engineering generally. Its advantages include low investment, easily available raw materials, no environmental pollution and low cost (20% less than existing process ).
Time: 7
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