CN103170467A - 铸锭循环料清洁处理方法 - Google Patents
铸锭循环料清洁处理方法 Download PDFInfo
- Publication number
- CN103170467A CN103170467A CN2011104396729A CN201110439672A CN103170467A CN 103170467 A CN103170467 A CN 103170467A CN 2011104396729 A CN2011104396729 A CN 2011104396729A CN 201110439672 A CN201110439672 A CN 201110439672A CN 103170467 A CN103170467 A CN 103170467A
- Authority
- CN
- China
- Prior art keywords
- ingot casting
- cleaning
- casting cycle
- cycle stock
- mixed solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005266 casting Methods 0.000 title claims abstract description 89
- 238000004140 cleaning Methods 0.000 title claims abstract description 53
- 239000000463 material Substances 0.000 title abstract description 6
- 239000011259 mixed solution Substances 0.000 claims abstract description 42
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- 239000000243 solution Substances 0.000 claims abstract description 39
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- 230000005591 charge neutralization Effects 0.000 claims abstract description 18
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- 239000010808 liquid waste Substances 0.000 abstract description 7
- 238000001035 drying Methods 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract 1
- 238000002791 soaking Methods 0.000 abstract 1
- 235000011121 sodium hydroxide Nutrition 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 10
- 239000007788 liquid Substances 0.000 description 6
- 230000000875 corresponding Effects 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical compound 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- 238000011112 process operation Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical compound 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Abstract
本发明公开了一种铸锭循环料清洁处理方法，通过依次进行的配制混合液、浸泡、冲洗、酸中和、过水、超声清洗和烘干工艺步骤，利用由片碱与清洗剂混合配制的淡碱混合溶液代替原有的强酸溶液对铸锭循环料进行清洗处理，避免了强酸溶液对操作人员的身体健康及周围环境造成的危害，大大提高了整个清洁过程的安全性，且该种淡碱混合溶液的废液处理难度较低，只需利用稀盐酸或稀氢氟酸进行适当酸中和处理即可直接排放，使得整个处理过程更加环保；同时，该种淡碱混合溶液的配制简便易行，制造成本较低，从而使得整个铸锭循环料的清洁处理成本得以相应降低。
Description
铸锭循环料清洁处理方法
技术领域
[0001] 本发明涉及硅材料表面处理技术领域，特别涉及一种铸锭循环料清洁处理方法。背景技术
[0002] 在太阳能行业多晶铸锭加工生产过程中，铸锭循环料的表面通常会附着有切割作业后残留的砂浆和切割液，同时还会附着一些金属杂质以及其他非硅类物质，这些杂质的存在会极大地影响后续的加工操作以及硅锭的制造品质。为去除这些杂质，生产厂家一般会实施相应的娃锭清洁处理措施。
[0003]目前现有的铸锭循环料的清洁处理过程，通常是将待清洁的铸锭循环料浸入由氢氟酸和硝酸配制的混合溶液中进行人工清洗，通过该混合溶液的强酸腐蚀性达到将附着于铸锭表层的杂质和污物剥离铸锭循环料的表面，以便后续加工工序的顺利实施。
[0004] 然而，虽然上述清洁处理方式能够满足基本的生产加工需要，但由于氢氟酸和硝酸混合溶液的腐蚀性极强，加工过程中会对操作人员的身体健康和周围环境造成不利影响。同时，氢氟酸和硝酸混合溶液的使用成本较高，造成铸锭循环料的整体清洁处理成本过高，且强酸废液处理难度较大，废液排放的环保压力较大。
[0005] 因此，如何使得铸锭循环料的清洁处理过程更加安全环保，同时降低其清洁处理成本是本领域技术人员目前需要解决的重要技术问题。
发明内容
[0006] 为解决上述技术问题，本发明提供了一种铸锭循环料清洁处理方法，其清洁处理过程更加安全环保，同时其处理成本较低。
[0007] 为解决上述技术问题，本发明提供一种铸锭循环料清洁处理方法，包括步骤:
[0008] 配制混合液，将片碱与清洗剂溶于水中，以配制混合溶液，且配制完成后的该混合溶液中的片碱浓度为5%，清洗剂浓度为2% ；
[0009] 浸泡，将待处理的铸锭循环料置于所述混合溶液内浸泡；
[0010] 冲洗，用大量的水冲洗浸泡完成后的铸锭循环料，并将冲洗后的铸锭循环料过纯水；
[0011] 酸中和，将铸锭循环料置于稀盐酸溶液或稀氢氟酸溶液中浸泡；
[0012] 过水，将铸锭循环料置于装有纯水的三级溢流槽内；
[0013] 超声清洗，对铸锭循环料进行超声波清洗；
[0014] 烘干，将铸锭循环料取出并烘干。
[0015] 优选地，所述步骤浸泡中，铸锭循环料置于所述混合溶液内的浸泡时间为I小时。
[0016] 优选地，所述步骤酸中和所采用的稀盐酸溶液或稀氢氟酸溶液的浓度均为3%。
[0017] 优选地，所述步骤酸中和中，铸锭循环料置于稀盐酸溶液或稀氢氟酸溶液中的浸泡时间为90秒。
[0018] 优选地，所述步骤超声清洗的持续时间为30分钟。[0019] 优选地，所述步骤烘干的持续时间为1.5〜2小时。
[0020] 优选地，所述步骤浸泡之前还包括步骤:
[0021] 装料，将待处理的铸锭循环料装于花篮内。
[0022] 相对上述背景技术，本发明所提供的铸锭循环料清洁处理方法，通过依次进行的配制混合液、浸泡、冲洗、酸中和、过水、超声清洗和烘干工艺步骤，利用由片碱与清洗剂混合配制的淡碱混合溶液代替原有的强酸溶液对铸锭循环料进行清洗处理，避免了强酸溶液对操作人员的身体健康及周围环境造成的危害，大大提高了整个清洁过程的安全性，且该种淡碱混合溶液的废液处理难度较低，只需利用稀盐酸或稀氢氟酸进行适当酸中和处理即可直接排放，使得整个处理过程更加环保；同时，该种淡碱混合溶液的配制简便易行，制造成本较低，从而使得整个铸锭循环料的清洁处理成本得以相应降低。
附图说明
[0023] 图1为本发明实施例一提供的铸锭循环料清洁处理方法的流程图；
[0024] 图2为本发明实施例二提供的铸锭循环料清洁处理方法的流程图。
具体实施方式
[0025] 本发明的核心是提供一种铸锭循环料清洁处理方法，其清洁处理过程更加安全环保，同时其处理成本较低。
[0026] 为了使本技术领域的人员更好地理解本发明方案，下面结合附图和具体实施方式对本发明作进一步的详细说明。
[0027] 请参考图1，图1为本发明实施例一提供的铸锭循环料清洁处理方法的流程图。
[0028] 本发明实施例一提供的铸锭循环料清洁处理方法，包括:
[0029] 步骤101:配制混合液；
[0030] 将片碱与清洗剂溶于水中，以配制混合溶液，且配制完成后的该混合溶液中的片碱浓度为5 %，清洗剂浓度为2 %。具有该种配比浓度的混合溶液，既能保证基本的铸锭循环料的清洁需要，又便于后续的废液处理，同时由于该混合溶液为弱碱性，有效避免了因采用强酸溶液进行清洁操作而对工作人员及周围作业环境造成的不利影响，且该混合溶液的配制过程简便易行，所采用的片碱即为工业用氢氧化钠，制造成本较低，从而使得整个铸锭循环料的清洁处理成本得以相应降低。
[0031] 步骤102:浸泡；
[0032] 将待处理的铸锭循环料置于所述混合溶液内浸泡。
[0033] 更具体地，上述步骤浸泡中，铸锭循环料置于所述混合溶液内的浸泡时间为I小时，以保证所述混合溶液能够与附着于铸锭循环料表面的杂质充分接触并反应，以使得清洁过程更加高效彻底。
[0034] 步骤103:冲洗；
[0035] 用大量的水冲洗浸泡完成后的铸锭循环料，并将冲洗后的铸锭循环料过纯水，以将残留于铸锭循环料表面的混合溶液和已脱离的杂质冲洗清除。
[0036] 步骤104:酸中和；
[0037] 将铸锭循环料置于稀盐酸溶液或稀氢氟酸溶液中浸泡，以使得残留于铸锭循环料表面的弱碱性混合溶液与稀盐酸溶液或稀氢氟酸溶液充分反应，从而保证处理完成后所产生的废液能够满足环保标准并可直接排放。
[0038] 应当指出，在实际生产操作中，一般采用稀盐酸溶液进行相关的酸中和操作，以使得整个处理过程更加环保。
[0039] 更具体地，上述步骤酸中和所采用的稀盐酸溶液或稀氢氟酸溶液的浓度均为3%。
[0040] 进一步地，铸锭循环料置于稀盐酸溶液或稀氢氟酸溶液中的浸泡时间为90秒。
[0041] 步骤105:过水；
[0042] 将铸锭循环料置于装有纯水的三级溢流槽内。利用纯水三级溢流对残留于铸锭循环料表面的废液和杂质进行彻底的清洁处理。
[0043] 步骤106:超声清洗；
[0044] 对铸锭循环料进行超声波清洗。
[0045] 更具体地，上述步骤超声清洗的持续时间为30分钟。
[0046] 步骤107:烘干；
[0047] 将铸锭循环料取出并烘干，以便后续相关加工工序的顺利实施。
[0048] 进一步地，上述步骤烘干的持续时间为1.5〜2小时，以保证烘干效果更加彻底有效。
[0049] 请参考图2，图2为本发明实施例二提供的铸锭循环料清洁处理方法的流程图。
[0050] 本发明实施例二提供的铸锭循环料清洁处理方法，包括:
[0051] 步骤201:配制混合液；
[0052] 将片碱与清洗剂溶于水中，以配制混合溶液，且配制完成后的该混合溶液中的片碱浓度为5 %，清洗剂浓度为2 %。具有该种配比浓度的混合溶液，既能保证基本的铸锭循环料的清洁需要，又便于后续的废液处理，同时由于该混合溶液为弱碱性，有效避免了因采用强酸溶液进行清洁操作而对工作人员及周围作业环境造成的不利影响，且该混合溶液的配制过程简便易行，所采用的片碱即为工业用氢氧化钠，制造成本较低，从而使得整个铸锭循环料的清洁处理成本得以相应降低。
[0053] 步骤202:装料；
[0054] 将待处理的铸锭循环料装于花篮内。操作人员通过花篮控制铸锭循环料的后续浸泡捞取等操作，以进一步避免相关溶液对操作人员的身体健康造成的不利影响，从而使得所述铸锭循环料清洁处理过程的安全性得以进一步提高。
[0055] 步骤203:浸泡；
[0056] 将待处理的铸锭循环料置于所述混合溶液内浸泡。
[0057] 更具体地，上述步骤浸泡中，铸锭循环料置于所述混合溶液内的浸泡时间为I小时，以保证所述混合溶液能够与附着于铸锭循环料表面的杂质充分接触并反应，以使得清洁过程更加高效彻底。
[0058] 步骤204:冲洗；
[0059] 用大量的水冲洗浸泡完成后的铸锭循环料，并将冲洗后的铸锭循环料过纯水，以将残留于铸锭循环料表面的混合溶液和已脱离的杂质冲洗清除。
[0060] 步骤205:酸中和；
[0061] 将铸锭循环料置于稀盐酸溶液或稀氢氟酸溶液中浸泡，以使得残留于铸锭循环料表面的弱碱性混合溶液与稀盐酸溶液或稀氢氟酸溶液充分反应，从而保证处理完成后所产生的废液能够满足环保标准并可直接排放。
[0062] 应当指出，在实际生产操作中，一般采用稀盐酸溶液进行相关的酸中和操作，以使得整个处理过程更加环保。
[0063] 更具体地，上述步骤酸中和所采用的稀盐酸溶液或稀氢氟酸溶液的浓度均为3%。
[0064] 进一步地，铸锭循环料置于稀盐酸溶液或稀氢氟酸溶液中的浸泡时间为90秒。
[0065] 步骤206:过水；
[0066] 将铸锭循环料置于装有纯水的三级溢流槽内。利用纯水三级溢流对残留于铸锭循环料表面的废液和杂质进行彻底的清洁处理。
[0067] 步骤207:超声清洗；
[0068] 对铸锭循环料进行超声波清洗。
[0069] 更具体地，上述步骤超声清洗的持续时间为30分钟。
[0070] 步骤208:烘干；
[0071] 将铸锭循环料取出并烘干，以便后续相关加工工序的顺利实施。
[0072] 进一步地，上述步骤烘干的持续时间为1.5〜2小时，以保证烘干效果更加彻底有效。
[0073] 综上可知，本发明中提供的铸锭循环料清洁处理方法，通过依次进行的配制混合液、浸泡、冲洗、酸中和、过水、超声清洗和烘干工艺步骤，利用由片碱与清洗剂混合配制的淡碱混合溶液代替原有的强酸溶液对铸锭循环料进行清洗处理，避免了强酸溶液对操作人员的身体健康及周围环境造成的危害，大大提高了整个清洁过程的安全性，且该种淡碱混合溶液的废液处理难度较低，只需利用稀盐酸或稀氢氟酸进行适当酸中和处理即可直接排放，使得整个处理过程更加环保；同时，该种淡碱混合溶液的配制简便易行，制造成本较低，从而使得整个铸锭循环料的清洁处理成本得以相应降低。
[0074] 本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
[0075] 以上对本发明所提供的铸锭循环料清洁处理方法进行了详细介绍。本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。
Claims (7)
1.一种铸锭循环料清洁处理方法，其特征在于，包括步骤: 配制混合液，将片碱与清洗剂溶于水中，以配制混合溶液，且配制完成后的该混合溶液中的片碱浓度为5%，清洗剂浓度为2% ； 浸泡，将待处理的铸锭循环料置于所述混合溶液内浸泡； 冲洗，用大量的水冲洗浸泡完成后的铸锭循环料，并将冲洗后的铸锭循环料过纯水； 酸中和，将铸锭循环料置于稀盐酸溶液或稀氢氟酸溶液中浸泡； 过水，将铸锭循环料置于装有纯水的三级溢流槽内； 超声清洗，对铸锭循环料进行超声波清洗； 烘干，将铸锭循环料取出并烘干。
2.如权利要求1所述的铸锭循环料清洁处理方法，其特征在于:所述步骤浸泡中，铸锭循环料置于所述混合溶液内的浸泡时间为I小时。
3.如权利要求1所述的铸锭循环料清洁处理方法，其特征在于:所述步骤酸中和所采用的稀盐酸溶液或稀氢氟酸溶液的浓度均为3%。
4.如权利要求3所述的铸锭循环料清洁处理方法，其特征在于:所述步骤酸中和中，铸锭循环料置于稀盐酸溶液或稀氢氟酸溶液中的浸泡时间为90秒。
5.如权利要求1所述的铸锭循环料清洁处理方法，其特征在于:所述步骤超声清洗的持续时间为30分钟。
6.如权利要求1所述的铸锭循环料清洁处理方法，其特征在于:所述步骤烘干的持续时间为1.5〜2小时。
7.如权利要求1至6任一项所述的铸锭循环料清洁处理方法，其特征在于:所述步骤浸泡之前还包括步骤: 装料，将待处理的铸锭循环料装于花篮内。
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