Title: Coal-ash fertilizer and production technology thereof
Application Number: 90106590 Application Date: 1990.07.30
Publication Number: 1058579 Publication Date: 1992.02.12
Approval Pub. Date: Granted Pub. Date: 1993.12.08
International Classifi-cation: C05G3/00
Applicant(s) Name: Zhongnan Electric Power Design Inst., Ministry of Address: 430061
Inventor(s) Name:
Attorney & Agent: ZHU BIWU
Abstract:
     The coal fly ash as a huge-heap of waste in electric power plant is used as the raw material of fertilizer. The productive technology is as follows: the coal fly ash is mixed with chemical fertilizer in a proportion of coal fly ash (70-95), urea (0-15) and P-fertilizer (5-20), and the mixture is loaded into a magnetizer for magnetizing it with a magnetic field strength of 2500-5000 Oe for 2-8 seconds.
Time: 8
<- Previous Patent:Making method of composite fertil...   |  Next Patent:Synergist for urea ->