Basegio T, Haas C, Pokorny A, Bernardes A M, Bergmann C P
Programa de Pós-Graduação em Engenharia de Minas, Metalúrgica e de Materiais, Escola de Engenharia, Universidade Federal do Rio Grande do Sul, Laboratório de Materiais Cerâmicos, Porto Alegre, RS, Brazil.
J Hazard Mater. 2006 Sep 21;137(2):1156-64. doi: 10.1016/j.jhazmat.2006.03.059. Epub 2006 Apr 15.
The leather tannery industry produces a significant amount of solid and hazardous wastes. Chromium-containing wastes like tanned shavings used to be incinerated in order to recover energy. The incineration process generates ashes that must be disposed of. This paper is a report on the results of the evaluation of technological properties and environmental compatibility of products made of alumina and ashes from incinerated chrome tanned shavings. The raw materials, tannery ashes and alumina were mixed together in different proportions. The ceramic bodies were molded using a hydraulic press and fired with a heating rate of 100 K/h until 1400 degrees C for 4 h in a muffle furnace. The ceramic specimens were characterized regarding physical, mechanical and thermal properties. Leaching tests, according to Brazilian, German and Dutch regulations, were performed on ceramic bodies containing different additions of ash. Results show that the ceramic materials produced are acceptable for refractory applications.
皮革制革行业会产生大量的固体和危险废物。含铬废物，如鞣制刨花，过去常被焚烧以回收能量。焚烧过程会产生必须处置的灰烬。本文是一份关于由氧化铝和焚烧铬鞣刨花产生的灰烬制成的产品的技术性能和环境兼容性评估结果的报告。将原材料、制革厂灰烬和氧化铝按不同比例混合。使用液压机将陶瓷坯体制成模具，并在马弗炉中以100 K/h的加热速率加热至1400摄氏度，持续4小时。对陶瓷试样的物理、机械和热性能进行了表征。根据巴西、德国和荷兰的法规，对含有不同灰烬添加量的陶瓷坯体进行了浸出试验。结果表明，所生产的陶瓷材料可用于耐火材料应用。
