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산화마그네슘과 요소를 주제로 한 비료의 제조방법Manufacturing method of fertilizer based on magnesium oxide and urea
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
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본문에 상술한 바와 같이 굴껍질로부터 수산화칼슘을 제조하는 제1공정과 해수에 염산을 반응시켜 중탄산칼슘을 제거하는 제2공정과 제2공정의 염산처리공정을 거친 해수에 제1공정에서 얻어진 수산화칼슘을 연속 투입하여 수산화마그네슘을 제조하는 제3공정과 이러한 수산화마그네슘을 가열하여 얻어진 수용성 산화마그네슘을 요소수용액과 혼합 가열하는 공정의 결합을 특징으로 하는 산화마그네슘과 요소를 주제로 한 비료의 제조방법.As described above, the calcium hydroxide obtained in the first step is subjected to the first step of producing calcium hydroxide from the oyster shell and the seawater undergoing the second step of removing calcium bicarbonate by reacting hydrochloric acid with seawater and the hydrochloric acid treatment step of the second step. A method for producing fertilizers based on magnesium oxide and urea, characterized by a combination of a third step of continuously feeding magnesium hydroxide and a step of mixing and heating a water-soluble magnesium oxide obtained by heating such magnesium hydroxide with an urea aqueous solution.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019820000784A1982-02-191982-02-19
Manufacturing method of fertilizer based on magnesium oxide and urea
KR830008959A
(en)