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复混肥生产，必须加入一定量的填充料，一般生产厂家多用有粘性的白粘土粉及复粉（建筑批墙用的石粉，主要成分为ＣａＯ３）为主，而有些厂家则加入泥炭土粉或硝基腐植酸粉和粘土粉。广东省一些蔗糖生产厂，所附设的复混肥生产装置，则利用生产蔗糖产生的大量废渣——滤泥，作
Compound fertilizer production, we must add a certain amount of filler, the general manufacturers with more sticky white clay powder and complex powder (building wall powder used for construction, the main component of CaO3) based, and some manufacturers are adding peat powder Or nitro humic acid powder and clay powder. Some sucrose plants in Guangdong Province, the attached compound fertilizer production plant, the use of sugar produced by the production of a large number of waste - filter for