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首页> 外文会议>International Conference on Solid Waste Technology and Management >Characteristics and Utilization of Slag obtained by the co-melting of MSWI Ash and Industrial Sludge
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Characteristics and Utilization of Slag obtained by the co-melting of MSWI Ash and Industrial Sludge

机译：MSWI灰和工业污泥共熔化获得的炉渣的特性和利用

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摘要

This study investigated the use of pulverized slag produced from melting municipal solid waste incinerator (MSWI) bottom ash and industrial calcium fluoride sludge as cement-replacement materials. The co-melting slag was air-cooled (AS) under room temperature, and then compared with water-cooled slag(WS). The experimental results showed that the lowest pouring temperature was 1079°C, where the basicity value was close to 1 when the co-melting ash and sludge were in the ratio of 7 : 3. The molten samples were cooled at room temperature and their properties were then examined. It was observed that the air-cooled slag was more crystalline than water-cooled slag. The analysis of setting times, strength activity index (SAI) and compressive strengths, indicated that the slag, which was a latent pozzlan could replace 3% to 20% cement in mortar. The air-cooled slag had not only pozzolanic activity but also crystalline structure, therefore it could cause higher compressive strengths as compared with water-cooled slag. It was also demonstrated that the pulverized slag as cement admixtures had a synergic effect, and the compressive strengths of slag-cement mortars could satisfy the strength requirement of ASTM standard.
机译：本研究调查了采用熔化城市固体废物焚烧炉（MSWI）底灰和工业氟化钙污泥生产的粉碎渣作为水泥置换材料。共熔化炉渣在室温下是风冷的（AS），然后与水冷渣（WS）相比。实验结果表明，当共熔化灰分和污泥的比例为7：3时，最低浇注温度为1079℃，其中碱性值接近1，靠近1。在室温下冷却熔融样品及其性质然后检查。观察到空气冷却的炉渣比水冷渣更结晶。凝固时间，强度活动指数（SAI）和抗压强度的分析表明，渣渣可以替代砂浆中的3％至20％水泥。空气冷却的炉渣不仅具有波佐族活性，而且还具有晶体结构，因此与水冷渣相比，它可能导致更高的抗压强度。还证明了作为水泥混合物的粉碎渣具有协同作用，炉渣水泥砂浆的抗压强度可以满足ASTM标准的强度要求。

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