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本文针对目前黄腐酸液体肥的生产中原料多样化、生产工艺技术多样化的发展状况,讨论了最早的以风化煤作原料,采用酸抽提法制备黄腐酸老工艺技术的优势及不足。在此基础上,介绍了就老工艺制备黄腐酸生产中原料预处理、母液抽提、固液分离三项核心技术,太原理工大学近年研究开发的新进展。经改进的老工艺技术保持了其原有优势、克服了其原有不足,在原料多样化、工艺技术多样化的今天,表现出较强的竞争力。
In this paper, according to the diversification of raw materials and production technology in the production of fulvic acid liquid fertilizer, the advantages and disadvantages of the old process technology of using acid extraction as the raw material to weathered coal are discussed. . On this basis, introduced three core technologies of raw material preparation, extraction of mother liquor, solid-liquid separation in the preparation of fulvic acid in the old process, new progress in research and development of Taiyuan University of Technology in recent years. The improved old technology retains its original advantages and overcomes its original deficiencies. It shows strong competitiveness in diversification of raw materials and diversification of technology.