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Publication numberCN103846081 B
Publication typeGrant
Application numberCN 201210518105
Publication date29 Jun 2016
Filing date6 Dec 2012
Priority date6 Dec 2012
Also published asCN103846081A
Publication number201210518105.7, CN 103846081 B, CN 103846081B, CN 201210518105, CN-B-103846081, CN103846081 B, CN103846081B, CN201210518105, CN201210518105.7
Inventors赖磊, 程祥标, 何斌, 刘强, 赵乔付
Applicant新疆中核天山铀业有限公司
Export CitationBiBTeX, EndNote, RefMan
External Links: SIPO, Espacenet
一种d382型树脂酸性解析工艺 One kind of an acidic resin d382 Analytical Technology translated from Chinese
CN 103846081 B
Abstract  translated from Chinese
本发明提供了一种D382型树脂在“高矿化、高氯根”碱法浸出条件下的操作简便且环保的解析、转型工艺。 The present invention provides a simple one kind of D382 resin at "high salinity, high chloride" alkaline leaching conditions of operation and environmental analysis, the transition process. 本发明的进步之处在于简化了解析工艺,降低了解析流比,提高了合格液铀浓度,去除了工艺盐和碳酸氢铵的消耗;与碱性解析工艺相比,降低了生产成本,减轻了员工的工作强度,除去了氨气的排放,操作流程更加简单且环保。 Of progress at the present invention is to simplify the analytical process and reduce the analytical flow ratio, improve the qualification liquid uranium concentration, in addition to technology and ammonium bicarbonate salt consumption; compared with the basic analytical process, reduce production costs, reduce the intensity of the work of employees, to remove the ammonia emissions, operational processes more simple and environmentally friendly.
Claims(4)  translated from Chinese
1. 一种D382型树脂酸性解析工艺,其特征在于包含以下步骤: 步骤1,D382型树脂吸附饱和后,经反洗工序将吸附于树脂颗粒间隙中的泥沙杂质清理,后用0. 2MPa压强的压缩空气将树脂颗粒间隙中的液体排干备用; 步骤2,将合格液、工业盐酸按照体积比14~16 :3的比例配制成酸化液,配制酸化液的体积须满足将包含D382型树脂的吸附塔完全充满后,还有lm3的余量;然后将其中60% 的酸化液送到吸附塔内,对经步骤1处理后的D382型树脂进行浸泡,浸泡时间为6~8小时;合格液指的是地浸技术中饱和树脂经解析剂解析后的含铀液体;工业盐酸为质量百分比为31 %的HC1溶液; 步骤3,将吸附塔内和吸附塔外的的酸化液进行循环,循环方式采用下进液,上出液的方式;循环6~8小时后监测循环液pH值,当进液与出液pH值达到一致且彡1. 5时停止循环;若pH值未达标,补加0. 5m3工业盐酸,继续循环,直到进液与出液pH值达到一致且彡1. 5时为止; 步骤4,完成步骤3后进入解析工序,解析工序选用解析剂为3~4g/L的盐酸溶液, 采用三塔串联解析,解析方式采用上进液、下出液,吸附塔内解析液的线速度为0.8~ 1. Om/h ;当解析出液流比达到2时停止进解析剂,获得解析合格液;然后向三塔中的首塔进0. 2MPa的压缩空气,继续解析,出液至酸化液储槽,加工业盐酸配制成酸化液后用于其他吸附塔的解析;进压缩空气将首塔压干后结束解析工序,转入步骤5 ; 步骤5,向首塔注入清水洗涤,线速度为2m/h,直至出液铀浓度小于lmg/L且pH值大于4.0方可停止; 步骤6,将步骤4得到的解析合格液进行中性沉淀:往解析合格液中边加入NaOH边搅拌,搅拌均匀后测量pH值,直至pH值为7. 0~8. 0时,停止加入NaOH和搅拌,进行沉淀;沉淀12小时后,排出上清液,再加同样体积的解析合格液,重复本步骤中的中性沉淀步骤,直到沉淀次数达到70次后,进行板框压滤操作获得产品。 An acidic resin D382 analytic process characterized by comprising the following steps: Step 1, the D382 resin adsorption saturation, the backwash process will be adsorbed to the resin particles sediment impurities gap cleaned after use 0. 2MPa pressure compressed air resin particles in the gap of draining spare; step 2, qualified fluids, industrial hydrochloric acid in a volume ratio of 14 to 16: 3 ratio formulated as acidizing fluids, acidizing fluid volume formulation will contain D382 type shall meet after the adsorber resin is completely filled, there lm3 margin; then 60% of the acidified solution to the adsorption tower after the processing of step 1 on the D382 resin soak, soak for 6 to 8 hours; Eligible liquid immersion technique refers to saturated resin parsed parsed agent containing uranium liquid; industrial hydrochloric acid as a percentage by mass of 31% HC1 solution; step 3, the adsorption tower in the adsorption tower and outside the acidizing fluid is circulated , adopted under cyclic manner into the liquid, the liquid out of the way; monitoring the pH of the circulating fluid circulation after 6 to 8 hours, consistent, and San 1.5 stops circulating fluid inlet and the fluid when the pH reached; if the pH value did not meet supplemented with 0. 5m3 industrial hydrochloric acid, the cycle continues until the liquid inlet and a pH value of 1.5 to achieve a consistent and San until the time; step 4, after completing step 3 into the analysis step, analysis step to resolve the selection agent is 3 ~ 4g / L hydrochloric acid solution, using three towers series analysis, analytical methods using liquid progress, under the liquid, the adsorption tower analytical liquid linear velocity of 0.8 ~ 1. Om / h; when resolving a ratio of 2 to stop the flow into parsing agent to obtain a qualified analytical solution; then enter 0. 2MPa compressed air to three towers in the first column, continue to resolve, the solution is acidified to liquid reservoir, plus industrial hydrochloric acid formulated as a liquid after acidification used to resolve other adsorption tower ; compressed air into the first tower after the dry end of the pressure analysis step, go to step 5; step 5, the first column was washed with water injection, a linear velocity of 2m / h, until the liquid uranium concentrations less than lmg / L and a pH greater than 4.0 before stopping; step 6, was qualified analytical step 4 was subjected to neutral precipitation: to resolve eligibility while adding NaOH solution, stirring, measuring pH stir until a pH value of 7.0 to 8, 0:00. , stop stirring and addition of NaOH, precipitation; precipitation after 12 hours, the supernatant was discharged, together with the same volume of liquid analytical qualified, this step is repeated neutral precipitation step, the precipitation until the number reaches 70 times, performed frame filter press operation to obtain product.
2. 如权利要求1所述的一种D382型树脂酸性解析工艺,其特征在于步骤3中,当进液与出液pH值达到一致且彡1. 3时停止循环。 2. An acidic resin D382 parsing process according to claim 1, wherein the step 3, when the inlet and the pH value to reach consensus and San stopping rotation 1. 3:00.
3. 如权利要求1所述的一种D382型树脂酸性解析工艺,其特征在于步骤4中,解析工序选用解析剂为3. 5g/L的盐酸溶液。 3. An acidic resin D382 parsing process according to claim 1, wherein the step 4, the parsing step resolves agent is selected 3. 5g / L hydrochloric acid solution.
4. 如权利要求1所述的一种D382型树脂酸性解析工艺,其特征在于步骤6中,合格液沉淀完全后,先加入1. 5倍衆体体积清水进行清水沉淀,排完上清液后,再进板框压滤操作获得广品。 4. An acidic resin D382 parsing process according to claim 1, wherein the step 6, after passing the liquid precipitation was complete, to join the 1.5 times the volume of water to be public bodies of water precipitation, the supernatant was drained , and then get into the frame filter press operation wide goods.
Description  translated from Chinese
一种D382型树脂酸性解析工艺 One kind of an acidic resin D382 Analytical Technology

技术领域 TECHNICAL FIELD

[0001] 本发明属于地浸采铀水冶处理技术领域,具体涉及D382型树脂在"高矿化、高氯根"碱法浸出条件下的解析、转型工艺。 [0001] The present invention belongs to the leaching of uranium hydrometallurgical processing technology, in particular to D382 resin at "high salinity, high chloride" alkaline leaching conditions analysis, the transition process.

背景技术 Background technique

[0002] 酸法地浸技术在伊犁铀矿山取得成功并在全国迅速发展,但在地质条件更为复杂的某矿山只能用弱试剂中性浸出工艺,同时此矿山矿石品位低,浸出液铀浓度低,浸出液的"高矿化度、高氯离子"使得大部分树脂基本不吸附铀,在化冶院合作下开发出了D382型树月旨,采取此型号树脂浸出液后处理工艺流程能够适应于该矿床"高矿化度、高氯离子"含量的浸出液处理,并能够满足于"低浓度、大流量"的浸出液工艺条件。 [0002] Acid In - situ uranium mining technology to achieve success in the Ili and the rapid development in the country, but in a more complex geological conditions, mine only with a weak neutral leaching reagent process, while the low grade ore mining, uranium concentrations in the leachate low leaching solution "high salinity, high chloride" making the most basic resin does not adsorb uranium, in cooperation with Metallurgical Academy developed a type of tree months D382 purpose, taken after this resin models leachate treatment process can be adapted to treating the leachate deposit "high salinity, high chloride ion" content, and the ability to meet the "low concentration, high flow" leachate process conditions. 但工业实验初期树脂处理需分两步进行,氯化钠加碳酸氯铵进行碱性解析,然后再用工业盐酸进行转型,此工艺流程过多,操作麻烦,工作量大,原材料的消耗大,操作过程氨气排放不利工人身心健康。 But the industrial processing required early experimental resin in two steps, sodium carbonate, ammonium chloride were added to a basic analysis, then use hydrochloric acid industry in transition, this process too, operational problems, workload, raw material consumption, ammonia emissions during operation adverse physical and mental health workers. 因此,极需开发一种废气排放减少、作业易操作且更环保的D382型树脂酸性解析工艺。 Therefore, great need to develop an emission reduction, jobs and more environmentally friendly and easy to operate D382 resin acidic analytical processes.

发明内容 SUMMARY

[0003] 本发明的目的是克服现有技术的缺陷,提供一种D382型树脂在"高矿化、高氯根" 碱法浸出条件下的操作简便且环保的解析、转型工艺。 [0003] The object of the present invention to overcome the deficiencies of the prior art, to provide a simple D382 resin at "high salinity, high chloride" alkaline leaching conditions of operation and environmental analysis, the transition process.

[0004] 为了实现上述目的,本发明的技术方案为,一种D382型树脂酸性解析工艺,包含以下步骤: [0004] To achieve the above object, the technical scheme of the present invention, one kind of an acidic resin D382 analytical process, comprising the steps of:

[0005] 步骤1,D382型树脂吸附饱和后,经反洗工序将吸附于树脂颗粒间隙中的泥沙等杂质清理,后用〇. 2MPa压强的压缩空气将树脂颗粒间隙中的液体排干备用; [0005] Step 1, the D382 resin adsorption saturation, the backwash process will clean up the impurities adsorbed on the resin particles such as silt in the gap after use square. 2MPa pressure compressed air resin particles in the gap of draining spare ;

[0006] 步骤2,将合格液、工业盐酸按照体积比14~16 :3的比例配制成酸化液,配置酸化液的体积须满足将包含D382型树脂的吸附塔完全充满后,还有lm3的余量;然后将其中60%的酸化液送到吸附塔内,对经步骤1处理后的D382型树脂进行浸泡,浸泡时间为6~ 8小时; [0006] Step 2, qualified fluids, industrial hydrochloric acid in a volume ratio of 14 to 16: 3 ratio formulated as acidizing fluids, acidizing fluid volume to be configured to meet the D382 resin adsorption column containing the fully charged after, there's lm3 balance; then 60% of the acidified solution to the adsorption tower after the processing of step 1 on the D382 resin soak, soak for 6 to 8 hours;

[0007] 步骤3,将吸附塔内和吸附塔外的的酸化液进行循环,循环方式采用下进液,上出液的方式;循环6~8小时后监测循环液pH,当进液与出液pH值达到一致且彡1. 5时停止循环;若pH值未达标,补加0. 5m3工业盐酸,继续循环,直到进液与出液pH值达到一致且彡1. 5时为止; [0007] Step 3, the adsorption tower in the adsorption tower and outside the acidizing fluid is circulated down into the liquid using cyclic manner, on the way to a solution; pH monitoring solution circulation loop 6 to 8 hours later, when the inlet and out stop solution pH to 1.5 consistent and San cycle; if the pH value is not reached, supplemented with 0. 5m3 industrial hydrochloric acid, the cycle continues until the liquid inlet and a pH value of 1.5 to achieve a consistent and San until the time;

[0008] 步骤4,完成步骤3后进入解析工序,解析工序选用解析剂为3~4g/L的盐酸溶液,采用三塔串联解析,解析方式采用上进液、下出液,吸附塔内解析液的线速度为0.8~ 1. Om/h ;当解析出液流比达到2左右时停止进解析剂,获得解析合格液;然后向三塔中的首塔进0. 2MP的压缩空气,继续解析,出液至酸化液储槽,加工业盐酸配制成酸化液后用于其他吸附塔的解析;进压缩空气将首塔压干后结束解析工序,转入步骤5 ; [0008] Step 4, after completing step 3 into the analysis step, analysis step to resolve the selection agent is hydrochloric acid solution 3 ~ 4g / L, using three towers series analysis, analytical methods using liquid progress, under the liquid, the adsorption tower analytical solution the linear velocity of 0.8 ~ 1. Om / h; when parsing out the flow ratio of around 2 stop into the analytical reagent, the qualified analytical solution; then enter 0. 2MP compressed air to three towers in the first column, continue to resolve , the solution is acidified liquid reservoir to prepare a processing solution is acidified with hydrochloric acid is used to resolve other adsorption column; the first column into the compressed air pressure after the dry end of the analysis step, go to step 5;

[0009] 步骤5,向首塔注入清水洗涤,线速度为2m/h,直至出液铀浓度小于lmg/L且pH值大于4.0方可停止; [0009] Step 5, the first column was washed with water injection, a linear velocity of 2m / h, until the liquid uranium concentrations less than lmg / L and a pH greater than 4.0 before stopping;

[0010] 步骤6,将步骤4得到的解析合格液进行中性沉淀:往解析合格液中边加入NaOH 边搅拌,搅拌均匀后测量pH值,直至pH值为7. 0~8. 0时,停止加入NaOH和搅拌,进行沉淀;沉淀12小时后,排出上清液,再加同样体积的解析合格液,重复本步骤中的中性沉淀步骤,直到沉淀次数达到70次后,进行板框压滤操作获得产品。 [0010] Step 6, was qualified analytical step 4 was subjected to neutral precipitation: To resolve eligibility while adding NaOH solution, stirring, measuring pH Stir until a pH value of 7.0 to 8, 0:00. stop stirring and addition of NaOH, precipitation; precipitation after 12 hours, the supernatant was discharged, together with the same volume of liquid analytical qualified, this step is repeated neutral precipitation step, the precipitation until the number reaches 70, the pressure plate and frame were filter operation to obtain product.

[0011] 所述步骤3中,当进液与出液pH值达到一致且彡1.3时停止循环。 [0011] the step 3, consistent, and San 1.3 stops circulating fluid inlet and the fluid when the pH reached.

[0012] 所述步骤4中,解析工序选用解析剂为3. 5g/L的盐酸溶液。 [0012] in the step 4, and an analysis step resolves agent is selected 3. 5g / L hydrochloric acid solution.

[0013] 所述步骤6中,合格液沉淀完全后,加入1. 5倍浆体体积清水进行清水沉淀,排完上清液后,再进板框压滤操作获得产品。 [0013] the step 6, after passing the liquid precipitation was complete, the slurry was added 1.5 times the volume of water carried water precipitation, the supernatant was drained, and then into the frame filter press operation to obtain the product.

[0014] 本发明的进步之处在于简化了解析工艺,降低了解析流比,提高了合格液铀浓度, 去除了工艺盐和碳酸氢铵的消耗;与碱性解析工艺相比,降低了生产成本,减轻了员工的工作强度,除去了氨气的排放,操作流程更加简单且环保。 [0014] at the progress of the present invention is to simplify the analytical process and reduce the analytical flow ratio, improve the qualification liquid uranium concentration, in addition to technology and ammonium bicarbonate salt consumption; compared with the basic analytical process, reducing production costs, reduce the intensity of employees, to remove the ammonia emissions, operational processes more simple and environmentally friendly.

具体实施方式 detailed description

[0015] 下面结合实施例对本发明进行进一步描述。 [0015] The following combination of embodiments of the present invention will be described further below.

[0016] 实施装置 [0016] embodiment of the apparatus

[0017] -种D382型树脂酸性解析工艺,借助于以下已有的装置实施: [0017] - kind of an acidic resin D382 analytical process, by means of a device according to the following existing:

[0018] a.吸附塔:吸附塔为直径2. 5m铁罐,总高为7. 5m,有效高度为6m,内衬P0,部件包括:塔底接口,DN200法兰,为液体出液口;塔顶接口,DN25,安装压力表用;塔顶接口,DN500 法兰,为原液进液口;塔顶接口,DN40,与压缩空气管道相连;压缩空气管道为DN50铁管,其余连接管道均为PPR管材,尺寸和法兰尺寸对应。 [0018] a column adsorption: adsorption tower 2. 5m diameter cans, total height of 7. 5m, the effective height of 6m, lined P0, member comprising: a bottom interfaces, DN200 flange, liquid liquid outlet ; overhead interfaces, DN25, install pressure gauges; overhead interfaces, DN500 flange for liquid inlet port; overhead interfaces, DN40, connected to the compressed air line; compressed air line is DN50 iron pipes, pipes are connected to the rest as PPR pipe, the corresponding size and flange dimensions.

[0019] b.解析剂储槽:直径2. 5m铁罐,高度为2m,内衬P0,部件包:塔顶接口,DN40法兰, 由DN40铁管与清水管道连接;塔顶排气口,40cm*40cm ;塔底接口,DN40法兰,解析剂出液口,由DN40的PPR管子与解析剂输送栗连接。 . [0019] b parsing agent reservoir: 2. 5m diameter cans and a height of 2m, lined P0, Part package: overhead interfaces, flange DN40, DN40 iron pipe connected by a pipe with water; overhead vent , 40cm * 40cm; bottom interfaces, DN40 flange, analytical agent a liquid outlet from the PPR pipe DN40 and resolve agent delivery chestnut connection.

[0020] c.酸化液储槽:直径2. 5m铁罐,高4m,内衬P0,部件包括:塔顶接□,DN40法兰, 由DN40铁管与清水管道连接;塔顶接口,DN40法兰,由DN40PPR管道接盐酸管道;塔顶排气口,DN50 ;塔顶接口,DN80法兰,酸化循环回水,由DN80PPR管道连接;塔底接口,DN80法兰, 酸化液出液用,接DN80PPR管道。 [0020] c acidizing fluid reservoir: 2. 5m diameter cans, high-4m, lined P0, components include: overhead contact □, DN40 flanges connected by iron pipe and DN40 water pipe; overhead interfaces, DN40 flanges, pipe connected by a DN40PPR hydrochloride pipeline; overhead vent, DN50; overhead interfaces, DN80 flange, acidification circulating backwater, DN80PPR connected by pipeline; bottom interfaces, DN80 flange, acidified liquid with a liquid, then DN80PPR pipeline.

[0021] d.原液池:原液池为长25m,宽20m,高3. 5m水泥槽,部件包括:原液进液口,长40cm,宽40cm ;排气口,长40cm,宽40cm ;排气口,长40cm,宽40cm ;原液出液口,DN200法兰, 由DN200铁管和进塔栗对接。 . [0021] d pool dope: dope pool length 25m, width 20m, height 3. 5m cement tanks, components comprising: liquid liquid inlet, length 40cm, width 40cm; vent length 40cm, width 40cm; exhaust mouth, length 40cm, width 40cm; dope liquid outlet, flange DN200, DN200 iron pipe from the tower and into the chestnut docking.

[0022] e.母液池:母液池长6m,宽6m,高2m铁槽,部件包括:DN40铁管,拍母液池中清液用。 [0022] e liquor pool: liquor pool length 6m, width 6m, 2m high iron tank components including: DN40 iron pipe, shoot pool with the supernatant liquor.

[0023] f.沉淀槽:直径1. 5m,高3. 3m铁罐,内衬P0,部件包括:罐顶接口,DN40法兰,由DN40PPR管道与合格液管道连接;罐顶接口,DN40法兰,由DN40PPR管道与清水管道连接; 罐顶接口,DN40法兰,由DN40PPR管道与板块回水管道连接;罐顶口,长40cm,宽40cm,沉淀加片碱用;罐底接口,DN40法兰,打板框出浆口,由DN40PPR管道连接。 [0023] f settling tank: diameter 1. 5m, 3. 3m high tin lined with P0, components comprising: tank top interfaces, DN40 flanges, connected by pipeline with qualified DN40PPR liquid pipeline; tank top interfaces, DN40 law. Portland, connected by pipes and water pipes DN40PPR; tank top interfaces, DN40 flanges, pipes and plates connected by DN40PPR return pipe; tank top opening, length 40cm, width 40cm, plus precipitation with caustic soda; tank bottom interfaces, DN40 law Portland, playing the stock inlet frame, connected by DN40PPR pipeline.

[0024] 实施步骤 Implementation steps [0024]

[0025] 步骤1,D382型树脂吸附饱和后,经反洗工序将吸附于树脂颗粒间隙中的泥沙等杂质清理,后用〇. 2MPa压强的压缩空气将树脂颗粒间隙中的液体排干备用; [0025] Step 1, the D382 resin adsorption saturation, the backwash process will clean up the impurities adsorbed on the resin particles such as silt in the gap after use square. 2MPa pressure compressed air resin particles in the gap of draining spare ;

[0026] 步骤2,某铀矿山采用15m3铀浓度小于5g/L的合格液中加入3m3工业盐酸的比例配制成吸附塔容积一致的酸化液,由酸化液输送栗将60%的酸化液输送至吸附塔内对树脂进行浸泡;合格液指的是地浸技术中饱和树脂经解析剂解析后的含铀液体,工业盐酸为质量百分比为31%有的HC1溶液,浸泡时间8小时;; [0026] Step 2, a uranium mine using 15m3 uranium concentrations less than 5g / L qualified was added 3m3 industrial hydrochloric acid ratio formulated as adsorber volume consistent acidification solution by acidizing fluid delivery chestnut 60% of the acidified liquid was fed into the adsorption tower of the resin soaked; qualified liquid immersion technique refers to saturated resin liquid containing uranium, industrial hydrochloric acid as a percentage by mass of 31% HC1 solution was to resolve some agents parsed, soaking time of 8 hours ;;

[0027] 步骤3,将吸附塔内和吸附塔外的酸化液进行循环,循环方式采用下进液,上出液的方式;循环6~8小时后监测循环液pH,当进液与出液pH值达到一致且彡优选1. 3时停止循环;若pH值未达标,补加0. 5m3工业盐酸,继续循环,直到进液与出液pH值达到一致且彡1. 3时为止; [0027] Step 3, the adsorption tower and acidizing fluid is circulated outside the adsorption tower, the cycle under way into the use of liquid, the liquid out of the way; pH monitoring solution circulation loop 6 to 8 hours later, when the liquid inlet and the liquid pH is consistent and stop cycles San preferably 1.3 Shi; if the pH value is not reached, supplemented with 0. 5m3 industrial hydrochloric acid, the cycle continues until the liquid inlet and a pH value of 1.3 to achieve a consistent and San until the time;

[0028] 步骤4,完成步骤3后进入解析工序,解析工序选用解析剂为3. 5g/L的盐酸溶液,采用三塔串联解析,解析方式采用上进液、下出液,吸附塔内解析液的线速度为0.8~ 1. Om/h ;当电子流量计测得的解析出液流比达到2左右时停止进解析剂,获得解析合格液; 然后开启空压机,向三塔中的首塔进0. 2MP的压缩空气,继续解析,出液至酸化液储槽,加工业盐酸配制成酸化液后用于其他吸附塔的解析,进压缩空气将首塔压干后结束解析工序,转入步骤5的漂洗工序;本实施例中,首塔压干时首塔解析液铀浓度小于800mg/L,解析前的D382型树脂是饱和树脂,经步骤4解析后成为贫树脂,首塔贫树脂残余铀容量小于lg/ L ; [0028] Step 4, after completing step 3 into the analysis step, analysis step to resolve the selection agent is hydrochloric acid solution 3. 5g / L, using three towers series analysis, analytical methods using liquid progress, under the liquid, the adsorption tower analytical solution the linear velocity of 0.8 ~ 1. Om / h; when the electronic meter measured parse out the flow ratio of around 2 stop into the analytical reagent, the qualified analytical solution; then, turn on the air compressor to the first three towers 0. 2MP compressed air into the tower, continue to resolve, the solution is acidified to liquid reservoir, plus industrial hydrochloric acid formulated as a liquid after acidification used to resolve other adsorber, compressed air into the tower will be the first after the end of the dry analytical process pressure, turn to step 5 of the rinsing step; the present embodiment, when the first tower tack first column analytical liquid uranium concentration is less than 800mg / L, D382 resin resolve before a saturated resin, after step 4 resolves become depleted resin, the first tower lean residual uranium resin capacity is less than lg / L;

[0029] 步骤5,向首塔注入清水洗涤,控制流量为10m3/h,直至出液铀浓度小于lmg/L且pH值大于4. 0方可停止,以达到回收树脂上残余铀和提高吸附塔内体系pH值的目的; [0029] Step 5, the first column was washed with water injection, to control the flow of 10m3 / h, until the liquid uranium concentrations less than lmg / L and a pH greater than 4.0 before the stop, in order to achieve the recovery of uranium and increase the residual resin adsorption Objective tower system pH value;

[0030] 步骤6,将步骤4得到的解析合格液进行中性沉淀:将解析合格液用栗打入沉淀槽中,边搅拌边加入片碱,合格液距沉淀槽顶l〇cm左右停止进液,搅拌5分钟后调节pH值至7. 0~8. 0,若pH不够,补加适量片碱继续搅拌,直到pH达标为止,停止搅拌进行沉淀;12小时后排上清液去母液池,然后再加合格液继续重复前面的步骤。 [0030] Step 6, was qualified analytical step 4 was subjected to neutral precipitation: Eligible solution will resolve with chestnut into the sedimentation tank, added with stirring caustic soda, liquid from the settling tank top qualified l〇cm about stopping feed was stirred for 5 minutes followed by pH adjustment to 7.0 - 80, if the pH is not enough, the addition of an appropriate amount of caustic soda stirring was continued until the pH of the standard up, the stirring was stopped precipitation;. 12 hours the supernatant mother liquor is back pool then add qualified solution continue to repeat the previous steps. 当沉淀次数达到70次以上时方可进行板框压滤操作,降低产品杂质含量,提高产品品位,合格液沉淀完全后,向沉淀槽中加入约1. 5倍浆体体积清水进行清水沉淀,排完上清液后方可进行打板框工序获得产品。 When the number reaches 70 times or more precipitation can be carried out when the frame filter press operations, reduce product impurities, improve product quality, qualified liquid precipitation was complete, the precipitation tank by adding about 1.5 times the volume of water carried water slurry precipitation, frame step before proceeding to fight to get the product after the supernatant was drained.

[0031] 实施结果:本发明与碱性解析合格液沉淀所得产品的参数对比和经济指标对比见表1和表2 : [0031] The result: the present invention with an alkaline solution qualified analytical parameters and economic indicators comparing the resulting precipitate product comparison in Table 1 and Table 2:

[0032] 表1 :两种产品参数对比 [0032] Table 1: comparison of two products parameters

Figure CN103846081BD00051

[0034] 表2两种工艺经济指标 [0034] Table 2 two processes of economic indicators

Figure CN103846081BD00061

[0036] 从表1可以看出,与碱性解析合格液沉淀所得产品相比具有一定优势,产品铀品位可提高约7%,,氯离子含量降低约1%。 [0036] As can be seen from Table 1, compared with an alkaline solution to resolve the resulting precipitate was qualified products has certain advantages, product grade uranium can be increased by about 7% ,, chlorine ion content reduced by about 1%.

[0037] 从表2可以看出,通过此工艺将碱性解析-酸性转型两步工艺简化为一步完成,解析流比由3左右降至2. 0左右,合格液铀浓度由8g/L左右提高到12g/L左右,除去了工艺盐和碳酸氢铵的消耗,与碱性解析工艺相比生产每吨铀可降低生产成本约1. 4万元,同时减轻了员工的工作强度,除去了氨气的排放,操作流程更加简单且环保。 [0037] As can be seen from Table 2, through this process will resolve basic - acidic Transition simplified two step process is done, the analytic flow ratio from about 2.0 down to about 3, were qualified by the uranium concentration around 8g / L increased to about 12g / L, the process of removing salt and bicarbonate of consumption, compared with the basic analytical process to produce a tonne of uranium can reduce the production cost of about 14,000 yuan, while reducing the intensity of the work of employees, to remove the ammonia emissions, operational processes more simple and environmentally friendly.

[0038] 上面对本发明的实施例作了详细说明,上述实施方式仅为本发明的最优实施例, 但是本发明并不限于上述实施例,在本领域普通技术人员所具备的知识范围内,还可以在不脱离本发明宗旨的前提下作出各种变化。 Faced with an embodiment of the invention has been [0038] described in detail on the above embodiments are merely preferred embodiments of the present invention, but the present invention is not limited to the embodiments described above, within the ordinary skill in the art to possess the knowledge, various changes may be made without departing from the spirit of the present invention premise.

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International ClassificationB01J20/34, B01J20/26
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