The invention discloses a preparation method of a low shrinkage dense split brick, which belongs to the technical field of building materials. This invention first carbonized rice husk material, fly ash, boron oxide, magnesia, calcium chloride, red sugar, urea, clay powder and emulsion ball milling to make ball abrasives. Under the condition of heating, the argon was continuously pumped into the ball abrasive, the layer was statically delamination, the surface oil phase was removed, the water phase was degassed and the water phase was prepared. Then the water phase was prepared. Then the water phase was obtained. Then the water phase was obtained. Then the water phase was obtained. Then the water phase was obtained. Then the water phase was obtained. After the slurry is pressed and dehydrated, the moisture content of the Bacillus pasteuricus is adjusted, and then the old stale is made. Then the stale is made, then cut, dried, and then burned at high temperature, and then the split, sorting and warehousing are followed, and the low shrinkage and dense split brick is obtained. The low shrinkage and compact split brick prepared by the technical proposal has the characteristics of low shrinkage, excellent mechanical properties and thermal stability.
【技术实现步骤摘要】
一种低收缩密实型劈开砖的制备方法
本专利技术公开了一种低收缩密实型劈开砖的制备方法,属于建筑材料
技术介绍
劈开砖,也名劈裂砖、劈离砖,是传统陶瓷墙砖的一种,因纹理独特,质感细腻,多年来广受青睐。传统的劈开砖,就是同质砖、面砖、外墙砖的一种,表面带有浅凹槽的砖样。劈开砖一般以各种粘土或配以长石等制陶原料经干法粉碎加水或湿法球磨压滤后制成含水湿坯泥,再以装有中空模具的真空螺旋挤出机挤出成为由扁薄的筋条将两片砖坯连结为一体的中空坯体,再经切割干燥后烧成,然后以人工或机器沿筋条连结处劈开为两片产品,故名劈开砖。劈开砖按表面的光滑程度分,可分为平面砖和拉毛砖,前者表面细腻光滑,后者是在坯料中加入颗粒料并在模具出口安装细钢丝对砖坯表面进行剖割,产品表面布满粗颗粒或凹坑,从而使产品表面获得粗糙的装饰效果。由于在挤压成型时为双层,在烧成后或使用之前可以劈开成两块而得名,它被广泛用于建筑物外墙以及室内地面装饰,也可用于停车场、广场、通道等场所,是理想的绿色环保生态建材产品。劈开砖因其具有粘接牢固,抗冻性好,耐酸碱,色泽柔和,永不褪色以及其他装饰砖无法比拟的装饰效果等特点,越来越受到建筑行业的广泛重视和推广。但是传统劈开砖在生产过程中,由于其原料干燥收缩大,在经过高温后容易变形或者开裂,严重的影响了劈开砖的成形质量,导致其力学性能下降,严重的影响其推广与应用。因此,如何改善传统劈开砖热收缩率大,力学性能及热稳定性不佳的缺点,以获取更高综合性能的劈开砖,是其推广与应用,满足工业生产需求亟待解决的问题。
技术实现思路
本专利技术主要解决的技术问题是:针对传统劈开砖热收缩率 ...
【技术保护点】
1.一种低收缩密实型劈开砖的制备方法,其特征在于具体制备步骤为:(1)按重量份数计,依次取60~80份炭化稻壳料,80~100份粉煤灰,30~40份氧化硼,40~50份镁砂,6~8份氯化钙,8~10份红糖,10~15份尿素,300~400份粘土粉,80~100份乳液,球磨混合,得球磨料;(2)于温度为55~60℃条件下,以200~300mL/min速率向上述所得球磨料中持续通入氩气2~4h后,静置分层,去除表层油相后,真空脱气45~60min,得水相浆体;(3)将水相浆体压滤脱水至含水率为6~8%,得脱水坯料,并将脱水坯料用巴氏芽孢杆菌菌液调节含水率至18~20%,搅拌混合后,静置陈腐24~48h,得陈腐料;(4)将所得陈腐料搅拌混合后,真空挤出成型后切割,得砖坯,再将所得砖坯烘干至含水率为0.6~0.8%,得干燥砖坯,随后将干燥砖坯高温烧成,再经劈离分拣,入库,即得低收缩密实型劈开砖。
【技术特征摘要】
1.一种低收缩密实型劈开砖的制备方法,其特征在于具体制备步骤为:(1)按重量份数计,依次取60~80份炭化稻壳料,80~100份粉煤灰,30~40份氧化硼,40~50份镁砂,6~8份氯化钙,8~10份红糖,10~15份尿素,300~400份粘土粉,80~100份乳液,球磨混合,得球磨料;(2)于温度为55~60℃条件下,以200~300mL/min速率向上述所得球磨料中持续通入氩气2~4h后,静置分层,去除表层油相后,真空脱气45~60min,得水相浆体;(3)将水相浆体压滤脱水至含水率为6~8%,得脱水坯料,并将脱水坯料用巴氏芽孢杆菌菌液调节含水率至18~20%,搅拌混合后,静置陈腐24~48h,得陈腐料;(4)将所得陈腐料搅拌混合后,真空挤出成型后切割,得砖坯,再将所得砖坯烘干至含水率为0.6~0.8%,得干燥砖坯,随后将干燥砖坯高温烧成,再经劈离分拣,入库,即得低收缩密实型劈开砖。2.根据权利要求1所述的一种低收缩密实型劈开砖的制备方法,其特征在于:步骤(1)所述炭化稻壳料制备过程为:按重量份数计,依次取100~150份稻壳,3~5份纳米铁粉,2~4份氟化钠,搅拌混合后转入...
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