Wax Reclamation & Burnout Heat Recovery
蜡料回收与焙烧炉余热利用
标签：蜡回收, 余热利用, 灰分, 可持续铸造
蒸汽脱蜡收集的蜡水含水分与填料，需 110–120℃ 蒸发脱水、经 200 目滤芯过滤后按 20–30% 掺入新蜡；回收蜡灰分须 <0.05%，酸值定期滴定，超标即弃用。焙烧炉烟气余热经换热器回收用于蜡库保温与车间采暖，回收率 15–25%；废陶瓷壳破碎后可作背层砂回用或水泥掺料。某工坊实施后蜡料成本下降 35%，年度废蜡排放从 4 t 降到 1 t 以下，并以此申请了地方清洁生产补贴。
Wax recovered from steam dewaxing carries water and filler: dehydrate at 110–120°C, filter through 200-mesh elements, and blend 20–30% into virgin wax. Ash must stay under 0.05% with acid number titrated periodically; off-spec wax is scrapped. Burnout flue-gas heat is recovered through exchangers for wax-room warming and shop heating at 15–25% recovery; crushed ceramic shell can return as backup stucco or cement additive. One workshop cut wax cost 35% and annual wax waste from 4 t to under 1 t, qualifying for a local cleaner-production subsidy.