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1、Dexing Copper Recovery Plant Training 德兴铜回收厂生产培训,ChemSulphide Process 化学硫化工艺,Introduction 简介,The Dexing Chemsulphide Copper Recovery Plant is designed with a hydraulic capacity of 24,000 m3/day recovering approximately 12,000 lbs. of copper. The plant will treat acidic drainage from the following so
2、urces 德兴化学硫化法铜回收厂的设计能力为每天处理24,000立方米水，回收12,000磅铜。回收厂处理的含铜水来自于以下来源： Yangtaowu acid drainage 杨桃坞酸性水 Zhujia raffinate 祝家萃余液 Zhujia pregnant leach solution (PLS) during wet seasons 雨季期间祝家堆浸液 Underground stream from an adit at Fujiawu 富家坞地下矿井废水 Fujiawu open pit and other water sources at JCCLs Dexing Cop
3、per Mine. 富家坞采矿场废水和其他来源,Basic Plant Flow 基本工艺流程,PLANT AREAS 厂区分布,Feed Loop 进水区 Ferric Removal Loop 除铁区 Copper Recovery Loop 沉铜区 Dewatering Loop 脱水区 Reagent Loop 药剂区 Service Loop 辅助服务区,Plant Components 厂区组成要素,Reagents 药剂 Lime 石灰 NaHS 硫氢化钠 Flocculent 絮凝剂 Sulfuric Acid 硫酸 Nitrogen 氮气 Soda Ash 碳酸钠,Equip
4、ment 设备 Tanks 反应罐 Agitators 搅拌机 Clarifiers 浓密池 Pumps 泵 Valves 阀门 Instrumentation 仪表 Filter press 压滤机,Reagents 药剂,Lime 石灰 NaHS 硫氢化钠 Flocculent 絮凝剂 Sulfuric Acid 硫酸 Nitrogen 氮气 Soda Ash 碳酸钠,Hydrated Lime 熟石灰,Hydrated Lime熟石灰- Ca(OH)2 氢氧化钙 Alkaline碱性, Slight earthy odor轻微的泥质气味,fine whitish powder白色细粉末.
5、 Mainly used for neutralization.通常用于中和酸性 Used on site to increase pH & precipitate Ferric iron from PLS在回收厂的用途为提高酸性水的pH值，沉淀3价铁离子,Health Hazards 健康危害,Skin Contact,may cause severe irritation, removes natural skin oils. 皮肤接触：引起刺激性，使皮肤表面脱油 Brush away excess and remove contaminated clothing, wash with s
6、oap & water 紧急措施：抹去多余粉末，脱下污染的衣服，用肥皂和清水清洗 Eye Contact, Severe irritation and burning.眼睛接触：严重刺激和灼伤 紧急措施： Flush with water 15 - 20 minutes 用清水冲洗15-20分钟 Inhalation, irritation to breathing passages, coughing, sneezing.吸入：刺激呼吸道、咳嗽、打喷嚏 紧急措施： Move to source of fresh air 转移到空气流通处 Refer to MSDS 参考化学品安全说明,Fir
7、st Aid 急救常识,Skin Contact, 皮肤接触 Brush away excess and remove contaminated clothing, wash with soap & water 抹去多余粉末，脱下污染的衣服，用肥皂和清水洗 Eye Contact, 眼睛接触 Flush with water 15 - 20 minutes 用清水冲洗15-20分钟 Inhalation, 吸入 Move to source of fresh air 转移到空气流通处 Refer to MSDS 参考化学品安全说明,Required PPE for Hydrated lime必
8、备个人安全装备,Dry Gloves 手套 Long sleeve shirt 长袖外衣 Dust Mask 防尘口罩 Eye Protection 防护眼镜 Steel toe Boots 铁头工作鞋 Hard hat 安全帽,Release Action 泄漏事故时的措施,Small Spill 小泄漏: i.e. a spill resulting from the pipe failure 例如：管道破裂引起泄漏 Action措施： Wash the solution into the nearest sump with plenty of water 大量清水冲洗泄漏液进最近的污水坑
9、.,Release Action Continued 泄漏事故时的措施续,Large Spill 大泄漏: i.e. a spill resulting from the tank failure 例如：储存罐破裂引起泄漏 Action措施： Add a very weak acid (i.e. acetic acid) 加入弱酸，如醋酸； Wash the neutralized solution into the nearest sump with plenty of water 大量清水冲洗中和后的泄漏液进最近的污水坑； Excavate the contaminated soil an
10、d add the weak acid ; move the soil to waste stockpile 挖出被污染的泥土，加入弱酸；将中和后的泥土堆放到废石场,Sodium Hydrosulfide 硫氢化钠(NaHS),NaHS- Very alkaline, pH 11.5-12.5. 弱碱性 Solution is typically yellow to dark green with a strong hydrogen sulfide (rotten egg) odor.黄色到深绿色的液体，带有强烈的硫化氢气味（臭鸡蛋味） Precipitates copper at optim
11、um pH levels 在适应的pH条件下沉淀铜离子 Vapor space over NaHS solution contains toxic hydrogen sulfide (H2S). This gas is colorless and heavier than air.The level of H2S above the solution is increased by solution contact with acidic materials (PLS). 硫化氢钠溶液的挥发气体含有有毒的硫化氢气体，该气体是无色的，比空气比重大。当硫氢化钠溶液和酸性水接触后，硫化氢气体的浓度将
12、增加。,Health Hazards 健康危害,Inhalation of H2S vapors is very dangerous. Exposure to 100-200 PPM of gas causes loss of sense of smell, coughing, choking, eye irritation, headache, dizziness. Continued low exposure or to more than 700 PPM will result in unconsciousness, respiratory paralysis and death. 硫化
13、氢气体的吸入市非常危险的。吸入100-200微克/升浓度的气体将会是人失去嗅觉、咳嗽、窒息、刺激眼睛、头疼和晕眩。持续接触低浓度或接触高于700毫克/升浓度的硫化氢气体，会导致失去知觉、呼吸紊乱、死亡,Health Hazards 健康危害,Skin & Eye Contact can result in 2nd & 3rd degree burns and potentially severe corneal eye injury. 皮肤和眼睛接触：导致2级和3级烫伤，可能引起严重的眼角膜损伤,First Aid 急救常识,Inhalation吸入: Get victim to fresh
14、air 转移至空气流通处 Eye Contact 眼睛接触: Flush entire eye thoroughly for 15 minutes. Get immediate medical help. 清水冲洗15分钟，立即采取医护措施 Skin Contact 皮肤接触: Flush exposed area with lots of water,remove contaminated clothing. 大量清水冲洗，脱去被污染衣物 Ingestion误食: DO NOT INDUCE VOMITING, Drink 2-4 glasses of water. 不用催吐，立即喝2-4杯
15、清水,Required PPE for NaHS 必备个人防护装备,Neoprene Gloves & apron 氯丁橡胶手套和防护板 Chemical boots 防化学品的工作靴 Chemical goggles & full face shield防化学品的护目镜和护脸罩 Hard hat 安全帽 Greater Exposure 高浓度接触 SCBA or Air supplied respirator自携式呼吸器,Release Action 泄漏事故时的措施,Small Spill 小泄漏: i.e. a spill resulting from the pipe failure
16、 例如：管道破裂引起泄漏 Action措施： Add the diluted hydrogen peroxide (3-5%) or weak sodium hypochlorite 加入稀释的过氧化氢（3-5%）或次氯酸钠； Wash the neutralized solution into the nearest sump with plenty of water 大量清水冲洗中和后的泄漏液进最近的污水坑.,Release Action Continued 泄漏事故时的措施续,Large Spill 大泄漏: i.e. a spill resulting from the tank failure 例如：储存罐破裂引起泄漏 Action措施： Add the diluted hydrogen peroxide (3-5%) or weak sodium hypochlorite 加入稀释的过氧化氢（3-5%）或次氯酸钠； Add a very weak acid (i.e. acetic acid) 加入弱酸，如醋酸； Wash the neutralized sol
