用鄂西某赤铁矿尾矿制备蒸养砖

金属矿山 ›› 2010, Vol. 39 ›› Issue (06): 182-185.

用鄂西某赤铁矿尾矿制备蒸养砖

张婷婷, 张一敏, 陈铁军

武汉理工大学

出版日期:2010-06-15 发布日期:2010-11-09
基金资助:
“十一五”国家科技支撑计划重点项目（编号：2007BAB15B02）。

Experimental Study on Preparation of Steam Cured Bricks Made from Tailings of Hematite in Western Hubei

Zhang Tingting，Zhang Yimin，Chen Tiejun

Wuhan University of Technology

Online:2010-06-15 Published:2010-11-09

摘要/Abstract

摘要： 以鄂西某赤铁矿尾矿为主要原料，按前期试验所确定的原料配比（尾矿78%，黄砂10%，水泥10%，石膏2%）制备蒸养砖，主要考察了外加剂种类及用量、蒸养制度和自然养护周期对制品性能的影响。试验结果表明，在掺水量为15%，外加剂三乙醇胺与水泥的质量比为0.01%，成型压力为20 MPa，蒸养制度为升温2 h→40 ℃恒温6 h→降温2 h，自然养护周期为28 d的条件下，制备的蒸养砖各项性能达到JC/T422—2007对MU15级产品的要求。

关键词: 赤铁矿尾矿, 蒸养砖, 外加剂, 蒸养制度

Abstract: Taking hematite tailings from western Hubei as raw materials, the preparation of steam cured bricks is made with the mixture ratio (tailings 78%, yellow sands 10%, cements 10%, and gypsums 2%) that is determined from the pre-tests. The influence of the additional reagent type, the dosage, the steam-cured system and the natural curing period on the performance of products is studied.The results show that the performance of product can reach MU15 level at the standard of JC/T422-2007 under the conditions of water consumption 15%, the mixture ratio of triethanolamine and cement at 0.01%, compressive strength at 20 MPa, and the curing temperature rising up to 2 h, constant temperature 40 ℃ for 6 h, then temperature lowering 2 h and the natural curing period of 28 d.

Key words: Hematite tailings, Steam-cured brick, Additional reagent, Steam-curing system

张婷婷, 张一敏, 陈铁军. 用鄂西某赤铁矿尾矿制备蒸养砖[J]. 金属矿山, 2010, 39(06): 182-185.

ZHANG Ting-Ting, ZHANG Yi-Min, CHEN Tie-Jun. Experimental Study on Preparation of Steam Cured Bricks Made from Tailings of Hematite in Western Hubei[J]. Metal Mine, 2010, 39(06): 182-185.

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[2]	陈章, 张一敏, 陈铁军. 外加剂对鄂西赤铁矿尾矿免烧砖性能的影响[J]. 金属矿山, 2010, 39(05): 179-182.

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