And the as prepared calcium nitric acid was further changed into calcium carbonate using ammonium bicarbonate and ammonia as the carbo-nization reagents.

Preparation of cryolite with high molecule ratio from fluosilicic acid and ammonium hydrocarbonate;

First,brine is reacted with ammonium hydrocarbonate to obtain the sodium hydrocarbonate and the ammonium chloride solution,and then filtrated.

Phosphogypsum reacts with ammonium hydrocarbonate at 5-30℃ to obtain ammonium sulfate solution,then the solution reacts with potassium chloride at 30℃ with adding an organic solvent to produce potassium sulfate.

Discussion on drying process for ammonium bicarbonate;

Study on preparation of high purity manganese carbonate from manganese sulfate and ammonium bicarbonate;

Nitrification inhibition effect of dicyandiamide on ammonium bicarbonate in red soils with different textures;

Investigation on preparation of tribasic lead sulphate from bismuth hydrometallurgy waste residue——the influence of ammonium hydrogen carbonate transformation process;

YAlO3 ultra-fine powder synthesized by precipitation,with the ammonium hydrogen carbonate as precipitator,the metal nitrate as reaction material.

It is found that the concentration of nitric acid has great effect on reclaiming rate of lead in the processing of nitric acid leaching-lead deposition after investigating the preparation of tribasic lead sulphate from bismuth waste residue by ammonium hydrogen carbonate transformation method.

Preparation of CeO_2 as Polishing Powder with NH_4HCO_3 by Precipitation;

STUDY ON PREPARING HIGH QUALITY URANIUM CONCENTRATE BY NH_4HCO_3 PRECIPITATION;