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稀土行业氯化钙废水

氯化钙废水在稀土行业主要源于两大核心场景:一是钕铁硼废料回收,采用盐酸浸出 + 氢氧化钙中和工艺,产生含氯化钙的草沉母液与萃取废水;二是离子型稀土脱氨处理,通过石灰乳与含氯化铵的高盐废水反应,生成氯化钙溶液与氨水,此类废水含盐量通常在 15%-30%,且含氟离子、重金属等杂质,属于典型高盐难处理废水。 氯化钙废水处理与稀土主工艺形成深度耦合:在钕铁硼废料回收中,蒸发回收的氯化钙可作为中和剂回用于浸出工序,降低氢氧化钙采购成本;在离子型稀土脱氨工艺中,石灰乳反应生成的氯化钙经蒸发提纯后外销,同时回收的氨水可回流至稀土沉淀工序。蒸发结晶成为衔接 “原料消耗 - 废水处理 - 副产品回用” 的核心枢纽。

Detailed introduction

江西某处理量300m3/天含盐(氯化铵)废水处理项目三效蒸发器
处理水量m³/d 蒸发量t/h 产品 吨水电耗
300 14 氯化铵1.9t/h (干基) , 含水5-8% 13.34度/吨

精准选材:接触液体物料材质选用TA2;接触二次蒸汽选用2205;接触生蒸汽设备(Q345R)及其冷凝水选用304不锈钢;接触物料冷凝水选用2205。 

 

初始温度 处理量 蒸发量 初始浓度 最终浓度
60-70℃ 300m³/d 105m³/d 1.3mol/L 2.0mol/L

本项目需要严格控制溶液中氟离子和硫酸根离子含量(即不能超过条件的最大值),否则将严重腐蚀设备和影响系统连续运行。

 

蒸发能耗分析
项目 消耗 单价(元) 金额(元)
蒸汽 kg 37.98 0.23 8.74
电 kwh 77.94 0.7 54.56
合计   63.3

Founded in 1998, Jinlong Machinery Group has been deeply engaged in the field of evaporation and crystallization concentration system solutions for over 20 years. Relying on years of technological expertise and practical project experience, we provide customers across various industries with end-to-end services—from scheme design and equipment manufacturing to installation, commissioning, and operation & maintenance support.

We firmly believe that every project carries our clients’ trust. We always adopt a serious and responsible attitude, precisely tailoring solutions to meet the diverse needs of different scenarios, rigorously controlling product quality and construction standards, and helping our clients achieve efficient, energy-saving, and stable production goals. From technology R&D to on-site delivery, we remain committed to excellence through focused dedication and uphold our original aspirations with meticulous craftsmanship, continuously creating core value for our clients.

Contact Us

Domestic hotline (mobile): 13913986648(Manager Zhou)
International Hotline (WhatsApp): +8615270806285(Mr. Ma)
Company email: sales@jl-evap.com
Sales and R&D Center: Zhongnan ZhiGu Industrial Park, Jiangbei New Area, Nanjing City
Group’s production base: Wei Wu Road, High-Tech Industrial Development Zone, Tianchang City

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