CN110526683A - 一种利用钽铌尾矿制备微晶复合发泡陶瓷保温板的方法 - Google Patents
一种利用钽铌尾矿制备微晶复合发泡陶瓷保温板的方法 Download PDFInfo
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Abstract
一种利用钽铌尾矿制备微晶复合发泡陶瓷保温板的方法,该方法以资源存储量大,利用率低,的钽铌尾矿为主原料,辅以添加特定成分配比的矿石料和添加剂,采用干法工艺,一次成型的制备出了表面具有微晶结构饰面的钽铌尾矿基微晶复合发泡陶瓷保温板。该发泡陶瓷保温板的容重不大于0.36 kg/m3,导热系数不大于0.10w/(m▪k),且抗压强度在5 Mpa以上,具有优异的保温性能和力学强度。该泡陶瓷保温板应用广泛、需求量大,投入生产使用后将大量消耗大量消耗钽铌尾矿,解决钽铌尾矿治理难的问题。
Description
技术领域
本发明涉及发泡陶瓷保温板的生产技术领域,具体的说是一种利用钽铌尾矿制备微晶复合发泡陶瓷保温装饰复合板的工艺方法。
技术背景
钽铌矿属钠长石化锂云母化花岗岩型矿石,主要含钽铌矿物为富锰钽铌铁矿及细晶石,主要脉石矿物为云母、长石和石英等,这几类矿物都是常见的陶瓷原料,在陶瓷制备过程中用量极大。
由于钽铌矿的原矿中钽铌的品位极低,精矿产率不到1%,因此,开采生产过程中产生的尾矿成分含量几乎与原矿相同,如果不加以合理利用,钽铌矿尾矿的库存堆存,将会对环境和安全会造成严重影响。所以如何对钽铌尾矿进行消化以及合理利用是急需解决的问题。
发明内容
本发明的技术目的为:以来源广泛、综合利用率低的钽铌尾矿为主原料,采用全过程干法工艺,制备一种应用广泛、需求量大,力学性能优异,保温效果好,且表面具有微晶结构饰面的微晶复合发泡陶瓷保温板。以大量消耗钽铌尾矿,解决钽铌尾矿的治理难问题。
为实现上述技术目的,本发明所采用的技术方案为:一种利用钽铌尾矿制备微晶复合发泡陶瓷保温板的方法,包括以下步骤:
步骤一、发泡陶瓷混配料的制备
① 按照重量份数,取钽铌尾矿70 ~90份置于粉碎机中粉碎成粒径为1~2cm的颗粒,之后,转置于立磨中,研磨成粒径为150-250目的钽铌尾矿微粉,备用;
② 按照重量份数,取矿石料5~20份、添加剂5 ~10份,分别置于粉碎装置中粉碎成粒径为120-200目的矿石料粉、以及粒径为200~250目的添加剂粉,备用;
③ 按照重量份数,取SiC 0.4~0.8份置于粉碎装置中粉碎成粒径为500~800目的SiC粉,备用;
④ 将步骤①制得的钽铌尾矿微粉、步骤②制得的矿石料粉和添加剂粉,以及步骤③制得的SiC粉一同置于混料机中进行混合至少15min,制得发泡陶瓷混配料,备用;
步骤二、微晶饰面混配料的制备
a按照重量份数,取微晶熔块30 ~45份,置于立磨机中研磨制成粒径为150-250目的微晶熔块粉,备用;
b按照重量份数,取矿石料5 ~30份、添加剂5 ~15份,分别置于粉碎装置中粉碎成粒径为120-200目的矿石料粉、以及粒径为200~250目的添加剂粉,备用;
c 将步骤a制得的微晶熔块粉,以及步骤b制得的矿石料粉和添加剂粉,一同置于混料机中进行混合至少15min,制得微晶饰面混配料,备用;
步骤三、布料
在辊道窑的辊轴上,利用棚板搭设一个中空的腔体状模具,之后,在中空腔体状模具的外侧布置挡板,并在中空腔体状模具的内表面铺设陶瓷纤维纸,按照13 ~17kg/m2的布料量,将步骤二制得的微晶饰面混配料铺设于陶瓷纤维纸上,之后,进行表面刮平,然后,按照30~40kg/m2的布料量,将步骤一制得的发泡陶瓷混配料铺设于已刮平的微晶饰面混配料上方,并再次进行表面刮平,制得预制件,备用;
步骤四、烧制
控制辊道窑内温度不断升高至1140~1180℃,并在该温度下进行保温烧制50~80min,之后,自然冷却至窑内温度低于80℃后,出窑卸板,并进行抛光定厚和切割后,即得成品发泡陶瓷保温板。
进一步的,所述的矿石料为高岭土、石英、钠长石、钾长石、滑石、方解石、锂云母、膨润土和白云石中的至少一种。
进一步的,所述的添加剂为玻璃粉、氧化铝、碳化硅、纯碱、碳酸钡和硼砂中的至少一种。
进一步的,在步骤三中,所述的棚板为堇青石或莫来石。
进一步的,在步骤四中,所述辊道窑的升温速率为5℃/min。
有益效果:
1、本发明的制备工艺以资源存储量大,利用率低,的钽铌尾矿为主原料,辅以添加特定成分配比的矿石料和添加剂,采用干法工艺,一次成型的制备出了表面具有微晶结构饰面的钽铌尾矿基微晶复合发泡陶瓷保温板。该发泡陶瓷保温板的容重不大于0.36 kg/m3,导热系数不大于0.10w/(m▪k),且抗压强度在5 Mpa以上,具有优异的保温性能和力学强度。该泡陶瓷保温板应用广泛、需求量大,投入生产使用后将大量消耗大量消耗钽铌尾矿,解决钽铌尾矿治理难的问题。
2、本发明的制备方法采用干法工艺来取缔现有技术中发泡陶瓷保温板的湿法工艺,整个干法工艺的流程是:配料→混料→布料→烧成→卸板切割。干法工艺的优势在于没有喷雾造粒、加水混料、坯体压制,坯料烧结脱水等繁琐过程,可以降低上述工序的能源消耗。同时,干法工艺使用的混料设备为混料机而非球磨,因为混料机内只需对物料进行混合,球磨则需要带动球石引起物料混合,所以干法混料能够明显降低能耗。经试验测定,本发明的干法工艺较湿法工艺来说,能源消耗显著降低,同时,由干法混料操作比较灵活,可适应频繁的物料更换,使操作较为简单。
3、本发明的制备方法,在步骤中摒弃了现有技术常规操作中必备物料——水的添加,整个生产工艺过程均为干法工艺,从而大大节约了水源,减少了能耗,也精简了步骤。工艺步骤利用不同功用物料在微晶复合发泡陶瓷保温板烧制过程中所参与的化学反应,自身的物化性质、分子结构等因素,通过不同原料之间特定粒径比例的调配和后续步骤中充分的混合,外加颗粒级配的方式来更好的把控混料的均匀度,使小颗粒自动填充至大颗粒的孔隙当中,并在后续的烧制过程中与大颗粒进行更好的接触、反应、融合,完成颗粒装配和微粒发泡作用过程,进而烧制熔融成容重小,内部多孔结构均匀、复杂,导热系数小,保温性好的微晶复合发泡陶瓷保温板。
具体实施方式
下面将结合几个具体实施例,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护范围。
一种利用钽铌尾矿制备微晶复合发泡陶瓷保温板的方法,包括以下步骤:
步骤一、发泡陶瓷混配料的制备
① 按照重量份数,取钽铌尾矿70 ~90份置于粉碎机中粉碎成粒径为1~2cm的颗粒,之后,转置于立磨中,研磨成粒径为150-250目的钽铌尾矿微粉,备用;
② 按照重量份数,取矿石料5~20份、添加剂5 ~10份,分别置于粉碎装置中粉碎成粒径为120-200目的矿石料粉、以及粒径为200~250目的添加剂粉,备用;
③ 按照重量份数,取SiC 0.4~0.8份置于粉碎装置中粉碎成粒径为500~800目的SiC粉,备用;
④ 将步骤①制得的钽铌尾矿微粉、步骤②制得的矿石料粉和添加剂粉,以及步骤③制得的SiC粉一同置于混料机中进行混合至少15min,制得发泡陶瓷混配料,备用;
步骤二、微晶饰面混配料的制备
a按照重量份数,取微晶熔块30 ~45份,置于立磨机中研磨制成粒径为150-250目的微晶熔块粉,备用;
b按照重量份数,取矿石料5 ~30份、添加剂5 ~15份,分别置于粉碎装置中粉碎成粒径为120-200目的矿石料粉、以及粒径为200~250目的添加剂粉,备用;
c 将步骤a制得的微晶熔块粉,以及步骤b制得的矿石料粉和添加剂粉,一同置于混料机中进行混合至少15min,制得微晶饰面混配料,备用;
步骤三、布料
在辊道窑的辊轴上,利用堇青石或莫来石棚板搭设一个中空的腔体状模具,之后,在中空腔体状模具的外侧布置挡板,并在中空腔体状模具的内表面铺设陶瓷纤维纸,按照13 ~17kg/m2的布料量,将步骤二制得的微晶饰面混配料铺设于陶瓷纤维纸上,之后,进行表面刮平,然后,按照30~40kg/m2的布料量,将步骤一制得的发泡陶瓷混配料铺设于已刮平的微晶饰面混配料上方,并再次进行表面刮平,制得预制件,备用;
步骤四、烧制
控制辊道窑内温度不断升高至1140~1180℃,并在该温度下进行保温烧制50~80min,之后,自然冷却至窑内温度低于80℃后,出窑卸板,并进行抛光定厚和切割后,即得成品发泡陶瓷保温板。
所述的矿石料为高岭土、石英、钠长石、钾长石、滑石、方解石、锂云母、膨润土和白云石中的至少一种。所述的添加剂为玻璃粉、氧化铝、碳化硅、纯碱、碳酸钡和硼砂中的至少一种。
当然,本发明的微晶复合发泡陶瓷保温板也可以由传统的湿法工艺进行制备。
作为本发明微晶复合钽铌尾矿基发泡陶瓷保温板的制备技术,钽铌尾矿制粉细度的选择范围较宽120~1200都可用作制备保温板材,但是使用200目左右粉料是最经济实用的,粉料颗粒太粗容易引起产品生产的不稳定,粉料颗粒太细制造成本太高。
作为本发明微晶复合钽铌尾矿基发泡陶瓷保温板的制备技术,耐火材料另一优选方案为使用碳化硅棚板。
作为本发明微晶复合钽铌尾矿基发泡陶瓷保温板的制备技术,烧制窑炉另一优选方案为隧道窑或梭式窑。
实施例 1
一种利用钽铌尾矿制备微晶复合发泡陶瓷保温板的方法,包括以下步骤:
步骤一、发泡陶瓷混配料的制备
① 钽铌尾矿9.0kg置于粉碎机中粉碎成粒径为1.5cm的颗粒,之后,转置于立磨中,研磨成粒径为200目的钽铌尾矿微粉,备用;
② 取锂云母0.5kg、高岭土0.3kg置于粉碎装置中粉碎成粒径为150目的矿石料粉I,取玻璃粉0.5kg置于粉碎装置中粉碎成粒径为220目的添加剂粉I,备用;
③取SiC 0.05kg份置于粉碎装置中粉碎成粒径为500目的SiC粉,备用;
④ 将步骤①制得的钽铌尾矿微粉、步骤②制得的矿石料粉和添加剂粉,以及步骤③制得的SiC粉一同置于混料机中进行混合至少15min,制得发泡陶瓷混配料,备用;
步骤二、微晶饰面混配料的制备
a取微晶熔块3.5kg,置于立磨机中研磨制成粒径为200目的微晶熔块粉,备用;
b取钠长石0.4kg、高岭土0.3kg、石英0.3kg、滑石0.2kg,置于粉碎装置中粉碎成粒径为200目的矿石料粉II;取氧化铝0.3kg、纯碱0.5 kg置于粉碎装置中粉碎成粒径为250目的添加剂粉II,备用;
c 将步骤a制得的微晶熔块粉,以及步骤b制得的矿石料粉和添加剂粉,一同置于混料机中进行混合至少15min,制得微晶饰面混配料,备用;
步骤三、布料
在辊道窑的辊轴上,利用堇青石或莫来石棚板搭设一个中空的腔体状模具,之后,在中空腔体状模具的外侧布置挡板,并在中空腔体状模具的内表面铺设陶瓷纤维纸,按照15kg/m2的布料量,将步骤二制得的微晶饰面混配料铺设于陶瓷纤维纸上,之后,进行表面刮平,然后,按照34kg/m2的布料量,将步骤一制得的发泡陶瓷混配料铺设于已刮平的微晶饰面混配料上方,并再次进行表面刮平,制得预制件,备用;
步骤四、烧制
控制辊道窑内温度不断升高至1140℃,并在该温度下进行保温烧制60min,之后,自然冷却至窑内温度低于80℃后,出窑卸板,并进行抛光定厚和切割后,即得成品发泡陶瓷保温板。
经测定,本实施例制得的微晶复合发泡陶瓷保温板的容重为0.31kg/m3,导热系数为0.095w/(m▪k),抗压强度为5.1Mpa。
实施例2
一种利用钽铌尾矿制备微晶复合发泡陶瓷保温板的方法,包括以下步骤:
步骤一、发泡陶瓷混配料的制备
① 钽铌尾矿8.5kg置于粉碎机中粉碎成粒径为1cm的颗粒,之后,转置于立磨中,研磨成粒径为150目的钽铌尾矿微粉,备用;
② 取锂云母0.8kg、白云石0.1kg置于粉碎装置中粉碎成粒径为200目的矿石料粉I,取玻璃粉0.6kg、碳化硅0.1 kg、碳酸钡0.1 kg、硼砂0.2 kg置于粉碎装置中粉碎成粒径为200目的添加剂粉I,备用;
③取SiC 0.04kg份置于粉碎装置中粉碎成粒径为500目的SiC粉,备用;
④ 将步骤①制得的钽铌尾矿微粉、步骤②制得的矿石料粉和添加剂粉,以及步骤③制得的SiC粉一同置于混料机中进行混合至少15min,制得发泡陶瓷混配料,备用;
步骤二、微晶饰面混配料的制备
a取微晶熔块3.6kg,置于立磨机中研磨制成粒径为150目的微晶熔块粉,备用;
b取钾长石0.6 kg、钠长石0.4kg、高岭土0.4kg、石英0.2kg、滑石0.2kg,置于粉碎装置中粉碎成粒径为150目的矿石料粉II;取玻璃粉0.2 kg、氧化铝0.2kg、碳化硅0.4 kg、硼砂0.1 置于粉碎装置中粉碎成粒径为200目的添加剂粉II,备用;
c 将步骤a制得的微晶熔块粉,以及步骤b制得的矿石料粉和添加剂粉,一同置于混料机中进行混合至少15min,制得微晶饰面混配料,备用;
步骤三、布料
在辊道窑的辊轴上,利用堇青石或莫来石棚板搭设一个中空的腔体状模具,之后,在中空腔体状模具的外侧布置挡板,并在中空腔体状模具的内表面铺设陶瓷纤维纸,按照17kg/m2的布料量,将步骤二制得的微晶饰面混配料铺设于陶瓷纤维纸上,之后,进行表面刮平,然后,按照30kg/m2的布料量,将步骤一制得的发泡陶瓷混配料铺设于已刮平的微晶饰面混配料上方,并再次进行表面刮平,制得预制件,备用;
步骤四、烧制
控制辊道窑内温度不断升高至1145℃,并在该温度下进行保温烧制70min,之后,自然冷却至窑内温度低于80℃后,出窑卸板,并进行抛光定厚和切割后,即得成品发泡陶瓷保温板。
经测定,本实施例制得的微晶复合发泡陶瓷保温板的容重为0.36kg/m3,导热系数为0.10w/(m▪k),抗压强度为6.7Mpa。
实施例3
一种利用钽铌尾矿制备微晶复合发泡陶瓷保温板的方法,包括以下步骤:
步骤一、发泡陶瓷混配料的制备
① 钽铌尾矿8.7kg置于粉碎机中粉碎成粒径为2cm的颗粒,之后,转置于立磨中,研磨成粒径为250目的钽铌尾矿微粉,备用;
② 取石英0.5 kg、钠长石0.3kg、钠长石0.2kg、滑石0.2kg、方解石0.2kg、膨润土0.6kg置于粉碎装置中粉碎成粒径为180目的矿石料粉I,取氧化铝0.3kg、碳化硅0.2kg、纯碱0.4kg、碳酸钡0.1kg置于粉碎装置中粉碎成粒径为250目的添加剂粉I,备用;
③取SiC 0.07kg份置于粉碎装置中粉碎成粒径为600目的SiC粉,备用;
④ 将步骤①制得的钽铌尾矿微粉、步骤②制得的矿石料粉和添加剂粉,以及步骤③制得的SiC粉一同置于混料机中进行混合至少15min,制得发泡陶瓷混配料,备用;
步骤二、微晶饰面混配料的制备
a取微晶熔块3kg,置于立磨机中研磨制成粒径为250目的微晶熔块粉,备用;
b取方解石0.2 kg、膨润土0.2 kg、白云石0.1 kg置于粉碎装置中粉碎成粒径为120目的矿石料粉II;取碳酸钡0.5kg置于粉碎装置中粉碎成粒径为220目的添加剂粉II,备用;
c 将步骤a制得的微晶熔块粉,以及步骤b制得的矿石料粉和添加剂粉,一同置于混料机中进行混合至少15min,制得微晶饰面混配料,备用;
步骤三、布料
在辊道窑的辊轴上,利用堇青石或莫来石棚板搭设一个中空的腔体状模具,之后,在中空腔体状模具的外侧布置挡板,并在中空腔体状模具的内表面铺设陶瓷纤维纸,按照13kg/m2的布料量,将步骤二制得的微晶饰面混配料铺设于陶瓷纤维纸上,之后,进行表面刮平,然后,按照32kg/m2的布料量,将步骤一制得的发泡陶瓷混配料铺设于已刮平的微晶饰面混配料上方,并再次进行表面刮平,制得预制件,备用;
步骤四、烧制
控制辊道窑内温度不断升高至1150℃,并在该温度下进行保温烧制50min,之后,自然冷却至窑内温度低于80℃后,出窑卸板,并进行抛光定厚和切割后,即得成品发泡陶瓷保温板。
经测定,本实施例制得的微晶复合发泡陶瓷保温板的容重为0.27kg/m3,导热系数为0.10w/(m▪k),抗压强度为6.9Mpa。
实施例4
一种利用钽铌尾矿制备微晶复合发泡陶瓷保温板的方法,包括以下步骤:
步骤一、发泡陶瓷混配料的制备
① 钽铌尾矿7.0kg置于粉碎机中粉碎成粒径为1.5cm的颗粒,之后,转置于立磨中,研磨成粒径为200目的钽铌尾矿微粉,备用;
② 取锂云母0.2kg、白云石0.3kg置于粉碎装置中粉碎成粒径为120目的矿石料粉I,取纯碱0.4kg、碳酸钡0.3kg置于粉碎装置中粉碎成粒径为230目的添加剂粉I,备用;
③取SiC 0.08kg份置于粉碎装置中粉碎成粒径为800目的SiC粉,备用;
④ 将步骤①制得的钽铌尾矿微粉、步骤②制得的矿石料粉和添加剂粉,以及步骤③制得的SiC粉一同置于混料机中进行混合至少15min,制得发泡陶瓷混配料,备用;
步骤二、微晶饰面混配料的制备
a取微晶熔块4.5kg,置于立磨机中研磨制成粒径为220目的微晶熔块粉,备用;
b取高岭土0.2 kg、石英0.3 kg、钠长石0.6 kg、钾长石0.2 kg、滑石0.7 kg、方解石0.4kg、锂云母0.2 kg、膨润土0.1 kg和白云石0.1 kg置于粉碎装置中粉碎成粒径为200目的矿石料粉II;取玻璃粉0.2 kg、碳化硅0.5 kg、纯碱0.5 kg、硼砂0.3 kg置于粉碎装置中粉碎成粒径为230目的添加剂粉II,备用;
c 将步骤a制得的微晶熔块粉,以及步骤b制得的矿石料粉和添加剂粉,一同置于混料机中进行混合至少15min,制得微晶饰面混配料,备用;
步骤三、布料
在辊道窑的辊轴上,利用堇青石或莫来石棚板搭设一个中空的腔体状模具,之后,在中空腔体状模具的外侧布置挡板,并在中空腔体状模具的内表面铺设陶瓷纤维纸,按照16kg/m2的布料量,将步骤二制得的微晶饰面混配料铺设于陶瓷纤维纸上,之后,进行表面刮平,然后,按照40kg/m2的布料量,将步骤一制得的发泡陶瓷混配料铺设于已刮平的微晶饰面混配料上方,并再次进行表面刮平,制得预制件,备用;
步骤四、烧制
控制辊道窑内温度不断升高至1180℃,并在该温度下进行保温烧制80min,之后,自然冷却至窑内温度低于80℃后,出窑卸板,并进行抛光定厚和切割后,即得成品发泡陶瓷保温板。
经测定,本实施例制得的微晶复合发泡陶瓷保温板的容重为0.29kg/m3,导热系数为0.089w/(m▪k),抗压强度为7.8Mpa。
以上公开的仅为本申请的几个具体实施例,但并非用于限定本发明的保护范围。任何熟悉本领域的技术人员,在本发明的基础上所做的改动与润饰,都应属于本发明的保护范围。
Claims (5)
1.一种利用钽铌尾矿制备微晶复合发泡陶瓷保温板的方法,其特征在于,包括以下步骤:
步骤一、发泡陶瓷混配料的制备
① 按照重量份数,取钽铌尾矿70 ~90份置于粉碎机中粉碎成粒径为1~2cm的颗粒,之后,转置于立磨中,研磨成粒径为150-250目的钽铌尾矿微粉,备用;
② 按照重量份数,取矿石料5~20份、添加剂5 ~10份,分别置于粉碎装置中粉碎成粒径为120-200目的矿石料粉、以及粒径为200~250目的添加剂粉,备用;
③ 按照重量份数,取SiC 0.4~0.8份置于粉碎装置中粉碎成粒径为500~800目的SiC粉,备用;
④ 将步骤①制得的钽铌尾矿微粉、步骤②制得的矿石料粉和添加剂粉,以及步骤③制得的SiC粉一同置于混料机中进行混合至少15min,制得发泡陶瓷混配料,备用;
步骤二、微晶饰面混配料的制备
a按照重量份数,取微晶熔块30 ~45份,置于立磨机中研磨制成粒径为150-250目的微晶熔块粉,备用;
b按照重量份数,取矿石料5 ~30份、添加剂5 ~15份,分别置于粉碎装置中粉碎成粒径为120-200目的矿石料粉、以及粒径为200~250目的添加剂粉,备用;
c将步骤a制得的微晶熔块粉,以及步骤b制得的矿石料粉和添加剂粉,一同置于混料机中进行混合至少15min,制得微晶饰面混配料,备用;
步骤三、布料
在辊道窑的辊轴上,利用棚板搭设一个中空的腔体状模具,之后,在中空腔体状模具的外侧布置挡板,并在中空腔体状模具的内表面铺设陶瓷纤维纸,按照13 ~17kg/m2的布料量,将步骤二制得的微晶饰面混配料铺设于陶瓷纤维纸上,之后,进行表面刮平,然后,按照30~40kg/m2的布料量,将步骤一制得的发泡陶瓷混配料铺设于已刮平的微晶饰面混配料上方,并再次进行表面刮平,制得预制件,备用;
步骤四、烧制
控制辊道窑内温度不断升高至1140~1180℃,并在该温度下进行保温烧制50~80min,之后,自然冷却至窑内温度低于80℃后,出窑卸板,并进行抛光定厚和切割后,即得成品发泡陶瓷保温板。
2.根据权利要求1所述的一种利用钽铌尾矿制备微晶复合发泡陶瓷保温板的方法,其特征在于:所述的矿石料为高岭土、石英、钠长石、钾长石、滑石、方解石、锂云母、膨润土和白云石中的至少一种。
3.根据权利要求1所述的一种利用钽铌尾矿制备微晶复合发泡陶瓷保温板的方法,其特征在于:所述的添加剂为玻璃粉、氧化铝、碳化硅、纯碱、碳酸钡和硼砂中的至少一种。
4.根据权利要求1所述的一种利用钽铌尾矿制备微晶复合发泡陶瓷保温板的方法,其特征在于:在步骤三中,所述的棚板为堇青石或莫来石。
5.根据权利要求1所述的一种利用钽铌尾矿制备微晶复合发泡陶瓷保温板的方法,其特征在于:在步骤四中,所述辊道窑的升温速率为5℃/min。
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