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以煤矸石、低品质钙基质、分析纯CaO和MgO为原料,根据设计的配比方案配制生料,在实验室YFX5-16Q-YC高温箱式电阻炉中进行不同温度位Q相水泥熟料的煅烧制备。对试验获得的不同温度条件下煅烧生成的Q相水泥熟料样品进行矿物组成X衍射分析和固硫特性分析。结果表明,煤矸石与低品质钙基质制取Q相水泥熟料,生料在温度为1 320℃时煅烧获得熟料的主要矿物组成为具有较好水化特性的2CaO.SiO2和Q相;煤矸石与分析纯制备Q相水泥熟料固硫率可达72.13%,煤矸石与低品质钙基质制备Q相水泥熟料固硫率可达51.24%。
Using coal gangue, low-quality calcium matrix, analytical pure CaO and MgO as raw materials, raw materials are prepared according to the designed proportioning scheme, and Q phase cement clinker is manufactured in a laboratory YFX5-16Q-YC high temperature box resistance furnace Calcination. The X-ray diffraction and sulfur fixation characteristics of Q phase cement clinker samples calcined at different temperatures obtained in the experiment were analyzed. The results show that QCC cement clinker is obtained from coal gangue and low quality calcium matrix, and the main minerals of clinker obtained from calcined raw material at 1 320 ℃ are 2CaO.SiO2 and Q phases with good hydration characteristics. Coal gangue and analytically pure Q-phase cement clinker can achieve a sulfur recovery rate of 72.13%. The sulfur fixation rate of coal gangue and Q-phase cement clinker with low quality calcium can reach 51.24%.