Harmless treatment of used foundry sands and dewatered municipal sludge by microwave

Harmless treatment of used foundry sands and dewatered municipal sludge by microwave
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微波无害化处理铸造废砂和脱水城市污泥

DOI:
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发表时间:
2015-07
期刊:
影响因子:
0.6
通讯作者:
卢记军
卢记军
中科院分区:
--
文献类型:
--
作者:
汪华方;卢记军

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王海峰,吕建军,陈凯峰,段海龙,武汉纺织大学,武汉,中国。本文讨论了一种处理水玻璃四种固体废物的新方法:水玻璃砂、城市脱水污泥、粘土砂泥和废聚乙烯。将约wt/50%水玻璃旧砂与wt/50%脱水污泥混合后,用微波固化,表面覆盖一定厚度的粘土砂污泥和聚乙烯废塑料。结果表明,Ф尺寸为50×50 mm的造粒样品的抗压强度在0.45 Mpa以上。废塑料是影响耐久性的关键因素,固化温度必须高于熔融温度,这样才能在废砂和污泥的表面涂覆更厚的薄膜。
H. F. Wang, J. J. Lu, K. F. Chen, H. L. Duan, Wuhan Textile University, Wuhan, China A new method to treat four solid wastes of sodium silicate used sands, dewatered municipal sludge, clay sands sludge and waste polyethylene, was discussed. About wt/ 50 % sodium silicate used sands and wt/ 50 % dewatered sludge were mixed, and then cured by microwave with a certain thickness film of clay sands sludge and waste plastic of polyethylene in the surface. The results showed that the compression strength of granulation sample with the size of Ф 50 × 50 mm was over 0,45 MPa. The waste plastic was the key factor for the durability, and curing temperature must be over melting temperature, so the thicker film could be coated in the surface of used sands and sludge.
DOI: --
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