CN114644509A - 一种高掺量钢渣废料的轻质硅晶石墙板及制备方法 - Google Patents
一种高掺量钢渣废料的轻质硅晶石墙板及制备方法 Download PDFInfo
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- 239000002893 slag Substances 0.000 title claims abstract description 72
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 71
- 239000010959 steel Substances 0.000 title claims abstract description 71
- 239000002699 waste material Substances 0.000 title claims abstract description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 17
- 239000010703 silicon Substances 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000005245 sintering Methods 0.000 claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 13
- 239000011707 mineral Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 239000011343 solid material Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 21
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 239000004927 clay Substances 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000010433 feldspar Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000004115 Sodium Silicate Substances 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- 229910052656 albite Inorganic materials 0.000 claims description 3
- 239000010459 dolomite Substances 0.000 claims description 3
- 229910000514 dolomite Inorganic materials 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims description 3
- -1 shale Substances 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 claims description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 2
- 239000010436 fluorite Substances 0.000 claims description 2
- 230000004907 flux Effects 0.000 claims description 2
- 238000010791 quenching Methods 0.000 claims description 2
- 230000000171 quenching effect Effects 0.000 claims description 2
- 238000010583 slow cooling Methods 0.000 claims description 2
- 239000000047 product Substances 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 3
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- 239000004566 building material Substances 0.000 abstract description 2
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- 238000009740 moulding (composite fabrication) Methods 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 8
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- 238000007664 blowing Methods 0.000 description 4
- 230000001680 brushing effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229910001341 Crude steel Inorganic materials 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 229910000366 copper(II) sulfate Inorganic materials 0.000 description 1
- JZCCFEFSEZPSOG-UHFFFAOYSA-L copper(II) sulfate pentahydrate Chemical compound O.O.O.O.O.[Cu+2].[O-]S([O-])(=O)=O JZCCFEFSEZPSOG-UHFFFAOYSA-L 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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Abstract
本发明涉及绿色建筑材料技术领域，具体涉及一种高掺量钢渣废料的轻质硅晶石墙板及制备方法，墙板由固体物料与水按照1：0.15～0.2的重量比例混合烧制而成；按重量百分含量计，固体物料由60％～80％钢渣、15％～40％矿物、1％～5％助熔剂组成。与现有技术相比，本发明以不同颗粒级配钢渣为主要原料，掺加一定质量的矿物原料和化工原料，经混料、成型、干燥、1000～1200℃高温烧结后制得轻质硅晶石墙板，解决钢渣在应用时的安定性问题，避免墙板在干燥和烧成过程中的收缩和开裂，提高了大宗固废的资源化利用效率，制得的产品满足新型装配式墙体材料的要求，且成品率高达98％以上，具有极高的经济价值和环保价值。
Description
技术领域
本发明涉及绿色建筑材料技术领域，具体涉及一种高掺量钢渣废料的轻质硅晶石墙板及制备方法。
背景技术
钢渣是炼钢过程中产生的一种副产品，其产率为粗钢产量的8％～15％，据统计2020年我国钢渣产量约为1.60亿吨。迄今为止，钢渣的回收利用主要集中在本厂回收、道路铺填、农业肥料等方面，但由于受到钢渣安定性问题限制难以深度开发，高效利用科技投入不足，产需双方标准不统一，所以钢渣的总体利用率仍不达30％。因此开发一种更高效、高附加值的钢渣利用方法对冶金行业的可持续发展具有重要意义。
轻质硅晶石墙板是一种以钢渣、页岩、石英砂尾矿、河道淤泥、陶瓷抛光渣、煤矸石、高锰酸钾尾渣等固体废物为主要原料，引入适量粘土、长石、青石等无机物，采用高温烧成工艺制备出的一种轻质墙板，具有保温隔热、隔音降噪、防水防潮的功能。在国家大力推进装配式墙体材料，烧结墙体材料部品化的形势下，轻质硅晶石墙板的开发适应市场发展，有着十分积极的意义。本发明利用大掺量钢渣制备轻质硅晶石墙板，主要通过控制钢渣的颗粒级配然后进行烧成，来解决钢渣在使用过程中的安定性问题，避免墙板在干燥和烧成过程中的收缩和开裂。制备该墙板的原料中钢渣含量大于70％，所以使得产品成本也大大降低。
发明内容
针对背景技术中提到的问题，本发明提供一种高掺量钢渣废料的轻质硅晶石墙板及制备方法，解决钢渣在应用时的安定性，提高钢渣利用效率问题。
一方面，本发明提供一种高掺量钢渣废料的轻质硅晶石墙板，关键在于：由固体物料与水按照1：0.15～0.2的重量比例混合烧制而成；按重量百分含量计，所述固体物料的组成如下：
钢渣60％～80％；
矿物15％～40％；
助熔剂1％～5％；
其中，按重量百分含量计，所述钢渣的颗粒级配组成如下：
20～40目钢渣20％～50％
40～100目钢渣30％～70％
＞100目钢渣10％～30％。
优选的，矿物是黏土、长石、页岩、萤石、钾长石、钠长石、白云石中的一种或多种。
优选的，所述助熔剂为腐植酸钠、碳酸钠、氧化铝、偏硅酸钠、玻璃熔块中的一种或多种。
另一方面，本发明提供一种高掺量钢渣废料的轻质硅晶石墙板的制备方法，关键在于：
S1.按照配方准确称量钢渣、矿物和助熔剂，并一次性投入进入混料机，混合均匀后，再向混料机里面加水，然后搅拌混匀得到可塑性指数为7-15的泥料；
S2.先将模具中均匀铺设一层泥料，压实，然后再继续铺设一层泥料，压实，如此重复多次，直至泥料均匀地填满整个模具后，脱模，得到胚体；
S3.将胚体送入干燥器内进行干燥成型，控制干燥失水率为15.2％～18％之间，控制坯体收缩率为0～1.0％；
S4.将干燥的坯体放入电炉中，在室温--1200℃下按照烧成工艺曲线进行烧结，在在1000～1200℃，保温30～60min，烧结后产品经急冷、缓冷两段退火工艺，得到成品。
优选的，S1中矿物粒度＜40目，助熔剂粒度＜40目。
优选的，S2具体为：模具尺寸为40×40×160mm，先在模具壁上均匀的涂刷脱模剂，然后将泥料均匀铺入模具中，厚度约为10mm，用手压实然后用橡皮锤捶打，确保模具中的泥料均匀密实；重复4～5次，使泥料均匀地填满整个模具，然后继续捶打，使得泥料之间结合紧密不存在空隙，成型面光滑，随后进行脱模，得到胚体。
优选的，S3中的干燥条件为：干燥温度为70℃～100℃，干燥时间为8h～10h。
优选的，S4中烧成工艺曲线为：从室温到120℃，采用8～15℃/min的升温速率；从120℃到400℃，采用4～8℃/min的升温速率；从400℃到800℃，采用3～7℃/min的升温速率；从800℃到1000℃，采用2～6℃/min的升温速率；从1000℃到1000～1200℃，采用2～4℃/min的升温速率。
优选的，S4中退火工艺为：采用6-8℃/min的降温速率从烧成温度降至800℃，然后采用3℃/min的降温速率降至室温。
优选的，所述成品的容重在1000～2000kg/m3之间，抗压强度为10.0～45.0MPa，抗折强度为4.5～20.0MPa，吸水率≤10.0％。
与现有技术相比，本发明提供的一种高掺量钢渣废料的轻质硅晶石墙板及制备方法，具有如下有益效果：
(1)本发明以不同颗粒级配钢渣为主要原料，掺加一定质量的矿物原料和化工原料，经混料、成型、干燥、1000～1200℃高温烧结后制得轻质硅晶石墙板，解决钢渣在应用时的安定性问题，避免墙板在干燥和烧成过程中的收缩和开裂，提高了大宗固废的资源化利用效率，改善了生态环境，具有极高的经济价值和环保价值；
(2)本发明制得的轻质硅晶石墙板具有容重小、抗压强度高、抗折强度高、吸水率低、成本低等优势，同时产品的强度性能指标稳定可控，进而保证了产品的成品率高，可达98％以上，能够满足新型装配式墙体材料的要求，引领烧结材料部品化新市场。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚，下面结合具体实施例对本发明进行详细描述。在此，还需要说明的是，为了避免因不必要的细节而模糊了本发明，在具体实施例中仅仅示出了与本发明的方案密切相关的结构和/或处理步骤，而省略了与本发明关系不大的其他细节。
另外，还需要说明的是，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。
实施例1
称取钢渣共450.0g，其中：粒度＞100目的钢渣55.0g；粒度在40～100目之间的钢渣260.0g；粒度在20～40目之间的钢渣135.0g；称取页岩50.0g，黏土50.0g，长石38.0g，碳酸钠12.0g。将上述称取好的粉料一次性置入行星搅拌锅中进行搅拌，搅拌锅转速为140r/min，搅拌时间为5min；固体粉料搅拌均匀后关闭搅拌锅，加入90.0g水后继续搅拌，搅拌锅转速为140r/min，搅拌时间为 8min，在三联模中均匀地刷入脱模剂，然后将混合好的可塑性指数为7的泥料分散成小块均匀放入模具中。先均匀铺入一层泥料，厚度约为10mm，用手压实然后用橡皮锤捶打，确保模具中的泥料均匀密实。重复4次，使泥料均匀地填满整个模具，然后继续捶打，使得泥料之间结合紧密不存在空隙，成型面光滑。随后进行脱模，脱模过程中保证已成型的坯体不发生变形，将脱模后的坯体置于托盘中，记录此时的坯体质量和尺寸。随后将坯体和托盘一同放入鼓风恒温干燥箱进行干燥，干燥温度为70℃，干燥时间为10h，此时的干燥收缩率为0.6％，失水率为16.3％。将干坯放入电炉中烧结：从室温到120℃，采用8℃/min的升温速率；从120℃到400℃，采用6℃/min的升温速率；从400℃到800℃，采用4℃/min的升温速率；从800℃到1000℃，采用3℃/min的升温速率；从1000℃到1200℃，采用2℃/min的升温速率。在1200℃温度范围内的保温时间为45min。随后采用8℃/min的降温速率从烧成温度降至800℃，然后采用3℃/min的降温速率降至室温。
检测结果：高掺量钢渣废料的轻质硅晶石墙板抗压强度为18.4MPa，抗折强度为5.8MPa，容重为1742.2kg/m3，吸水率为7.2％。
实施例2
称取钢渣共468.0g，其中：粒度＞100目的钢渣130.0g；粒度在40～100目之间的钢渣280.0g；粒度在20～40目之间的钢渣58.0g，称取页岩30.0g，黏土 25.0g，长石25.0g，白云石28.0g，玻璃熔块16.0g，偏硅酸钠8.0g。将上述称取好的粉料一次性置入行星搅拌锅中进行搅拌，搅拌锅转速为140r/min，搅拌时间为5min；固体粉料搅拌均匀后关闭搅拌锅，加入115.0g水后继续搅拌，搅拌锅转速为140r/min，搅拌时间为8min。在三联模中均匀地刷入脱模剂，然后将混合好的可塑性指数为9的泥料分散成小块均匀放入模具中。先均匀铺入一层泥料，厚度约为10mm，用手压实然后用橡皮锤捶打，确保模具中的泥料均匀密实。重复5次，使泥料均匀地填满整个模具，然后继续捶打，使得泥料之间结合紧密不存在空隙，成型面光滑。随后进行脱模，脱模过程中保证已成型的坯体不发生变形，将脱模后的坯体置于托盘中，记录此时的坯体质量和尺寸。随后将坯体和托盘一同放入放入鼓风恒温干燥箱进行干燥，干燥温度为85℃，干燥时间为7h，此时的干燥收缩率为0.8％，失水率为15.2％。将干坯放入电炉中烧结：从室温到120℃，采用8℃/min的升温速率；从120℃到400℃，采用7℃/min 的升温速率；从400℃到800℃，采用5℃/min的升温速率；从800℃到1000℃，采用3℃/min的升温速率；从1000℃到1150℃，采用2℃/min的升温速率。在 1150℃温度范围内的保温时间为30min。随后采用6℃/min的降温速率从烧成温度降至800℃，然后采用3℃/min的降温速率降至室温。
检测结果：高掺量钢渣废料的轻质硅晶石墙板抗压强度为40.7MPa，抗折强度为18.9MPa，容重为1830.8kg/m3，吸水率为6.3％。
实施例3
称取钢渣共360.0g，其中：粒度＞100目的钢渣72.0g；粒度在40～100目之间的钢渣252.0g；粒度在20～40目之间的钢渣36.0g，称取页岩50.0g，黏土75.0g，钾长石55.0g，钠长石30.0g，玻璃熔块30.0g。将上述称取好的粉料一次性置入行星搅拌锅中进行搅拌，搅拌锅转速为140r/min，搅拌时间为5min；固体粉料搅拌均匀后关闭搅拌锅，加入108.0g水后继续搅拌，搅拌锅转速为 280r/min，搅拌时间为8min。在三联模中均匀地刷入脱模剂，然后将混合好的可塑性指数为12的泥料分散成小块均匀放入模具中。先均匀铺入一层泥料，厚度约为10mm，用手压实然后用橡皮锤捶打，确保模具中的泥料均匀密实。重复 4次，使泥料均匀地填满整个模具，然后继续捶打，使得泥料之间结合紧密不存在空隙，成型面光滑。随后进行脱模，脱模过程中保证已成型的坯体不发生变形，将脱模后的坯体置于托盘中，记录此时的坯体质量和尺寸。随后将坯体和托盘一同放入放入鼓风恒温干燥箱进行干燥，干燥温度为90℃，干燥时间为8h，此时的干燥收缩率为1.0％，失水率为18％。将干坯放入电炉中烧结：从室温到 120℃，采用10℃/min的升温速率；从120℃到400℃，采用8℃/min的升温速率；从400℃到800℃，采用7℃/min的升温速率；从800℃到1000℃，采用6℃/min 的升温速率；从1000℃到1200℃，采用4℃/min的升温速率。在1200℃温度范围内的保温时间为60min。随后采用7℃/min的降温速率从烧成温度降至800℃，然后采用3℃/min的降温速率降至室温。
检测结果：高掺量钢渣废料的轻质硅晶石墙板抗压强度为21.5MPa，抗折强度为10.6MPa，容重为1630.8kg/m3，吸水率为7.3％。
实施例4
称取钢渣共480.0g，其中：粒度＞100目的钢渣240.0g；粒度在40～100目之间的钢渣144.0g；粒度在20～40目之间的钢渣96.0g，称取页岩40.0g，黏土 50.0g，腐植酸钠20.0g，偏硅酸钠10.0g。将上述称取好的粉料一次性置入行星搅拌锅中进行搅拌，搅拌锅转速为140r/min，搅拌时间为5min；固体粉料搅拌均匀后关闭搅拌锅，加入102.0g水后继续搅拌，搅拌锅转速为280r/min，搅拌时间为8min。在三联模中均匀地刷入脱模剂，然后将混合好的可塑性指数为15 的泥料分散成小块均匀放入模具中。先均匀铺入一层泥料，厚度约为10mm，用手压实然后用橡皮锤捶打，确保模具中的泥料均匀密实。重复5次，使泥料均匀地填满整个模具，然后继续捶打，使得泥料之间结合紧密不存在空隙，成型面光滑。随后进行脱模，脱模过程中保证已成型的坯体不发生变形，将脱模后的坯体置于托盘中，记录此时的坯体质量和尺寸。随后将坯体和托盘一同放入放入鼓风恒温干燥箱进行干燥，干燥温度为100℃，干燥时间为7h，此时的干燥收缩率为0.3％，失水率为16.9％。将干坯放入电炉中烧结：从室温到120℃，采用15℃/min的升温速率；从120℃到400℃，采用4℃/min的升温速率；从400℃到800℃，采用7℃/min的升温速率；从800℃到1000℃，采用2℃/min 的升温速率；从1000℃到1150℃，采用2℃/min的升温速率。在1150℃温度范围内的保温时间为40min。随后采用7℃/min的降温速率从烧成温度降至800℃，然后采用3℃/min的降温速率降至室温。
检测结果：高掺量钢渣废料的轻质硅晶石墙板抗压强度为42.7MPa，抗折强度为17.6MPa，容重为1910.8kg/m3，吸水率为7.1％。
最后说明的是，以上实施例仅用以说明本发明的技术方案而非限制，尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的宗旨和范围，其均应涵盖在本发明的权利要求范围当中。
Claims (10)
1.一种高掺量钢渣废料的轻质硅晶石墙板，其特征在于由固体物料与水按照1：0.15～0.2的重量比例混合烧制而成；按重量百分含量计，所述固体物料的组成如下：
钢渣60％～80％；
矿物15％～40％；
助熔剂1％～5％；
其中，按重量百分含量计，所述钢渣的组成如下：
20～40目钢渣20％～50％
40～100目钢渣30％～70％
＞100目钢渣10％～30％。
2.根据权利要求1所述的一种高掺量钢渣废料的轻质硅晶石墙板，其特征在于：矿物是黏土、长石、页岩、萤石、钾长石、钠长石、白云石中的一种或多种。
3.根据权利要求1所述的一种高掺量钢渣废料的轻质硅晶石墙板，其特征在于：所述助熔剂为腐植酸钠、碳酸钠、氧化铝、偏硅酸钠、玻璃熔块中的一种或多种。
4.一种如权利要求1-3所述的高掺量钢渣废料的轻质硅晶石墙板的制备方法，其特征在于：
S1.按照配方准确称量钢渣、矿物和助熔剂，并一次性投入进入混料机，混合均匀后，再向混料机里面加水，然后搅拌混匀得到可塑性指数为7-15的泥料；
S2.先将模具中均匀铺设一层泥料，压实，然后再继续铺设一层泥料，压实，如此重复多次，直至泥料均匀地填满整个模具后，脱模，得到胚体；
S3.将胚体送入干燥器内进行干燥成型，控制干燥失水率为15.2％～18％之间，控制坯体收缩率为0～1.0％；
S4.将干燥的坯体放入电炉中，在室温--1200℃下按照烧成工艺曲线进行烧结，在1000～1200℃，保温30～60min，烧结后产品经急冷、缓冷两段退火工艺，得到成品。
5.根据权利要求4所述的高掺量钢渣废料的轻质硅晶石墙板的制备方法，其特征在于S1中矿物粒度＜40目，助熔剂粒度＜40目。
6.根据权利要求4所述的高掺量钢渣废料的轻质硅晶石墙板的制备方法，其特征在于S2具体为：模具尺寸为40×40×160mm，先在模具壁上均匀的涂刷脱模剂，然后将泥料均匀铺入模具中，厚度约为10mm，用手压实然后用橡皮锤捶打，确保模具中的泥料均匀密实；重复4～5次，使泥料均匀地填满整个模具，然后继续捶打，使得泥料之间结合紧密不存在空隙，成型面光滑，随后进行脱模，得到胚体。
7.根据权利要求4所述的高掺量钢渣废料的轻质硅晶石墙板的制备方法，其特征在于S3中的干燥条件为：干燥温度为70℃～100℃，干燥时间为8h～10h。
8.根据权利要求4所述的高掺量钢渣废料的轻质硅晶石墙板的制备方法，其特征在于S4中烧成工艺曲线为：从室温到120℃，采用8～15℃/min的升温速率；从120℃到400℃，采用4～8℃/min的升温速率；从400℃到800℃，采用3～7℃/min的升温速率；从800℃到1000℃，采用2～6℃/min的升温速率；从1000℃到1000～1200℃，采用2～4℃/min的升温速率。
9.根据权利要求4所述的高掺量钢渣废料的轻质硅晶石墙板的制备方法，其特征在于S4中退火工艺为：采用6-8℃/min的降温速率从烧成温度降至800℃，然后采用3℃/min的降温速率降至室温。
10.根据权利要求4所述的高掺量钢渣废料的轻质硅晶石墙板的制备方法，其特征在于：所述成品的容重在1000～2000kg/m3之间，抗压强度为10.0～45.0MPa，抗折强度为4.5～20.0MPa，吸水率≤10.0％。
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