吴月毕业论文.doc

煤矸石制备烧结普通砖的实验研究 摘 要 煤矸石是目前我国排放量最大的工业固体废弃物之一煤矸石本身有一定的热量，可以满足自身烧成的需要，用煤矸石制砖原料是变废为宝之举。本课题研究以煤矸石为主要原料制备烧结普通砖的可行性，并确定煤矸石制备烧结普通砖的最佳工艺参数。 本课题分别研究了、烧成温度和保温时间对煤矸石烧结普通砖性能的影响。通过多次实验确定当粒径为，粗、中、细颗粒间符合最紧密堆积，当烧成温度为℃—1050℃时，制品的抗折强度和抗压强度达到，℃，保温时间为2个小时的时候制品的抗折强度和抗压强度分Mpa和Mpa。 关键词：煤矸石烧结砖烧成温度保温时间性能  reparation of agglomerating bricks by coal gangue Abstract Coal Gangue is one of the industrial solid wastes in our country.It not only invades and occupies the land, but also pollutes the environment, destroys the ecological balance. As the coal gangue has calorific value it can meet the needs of their own firing, so if we can make use of these coal gangue to manufacture agglomerating brick it is an effective way of turning waste into wealth. This study is based coal gangue as the main material produced feasibility of agglomerating brick, then put forward the optimal process parameters and demands. The paper discuss the effect factors for the process from the grain size distribution, firing temperature and soaking time on the properties of bricks that made by coal gangue. Many experiments shows that when the particle size of 0.45mm-0.80mm particles accounted for 30%, 0.30mm-0.45mm particles accounted for 15%, 0.30mm particles less than 55%, the coarse, medium and fine particles can meet the most close packing.When the firing temperature is 1100 ℃, 2h insulation, the bending strength and compressive strength of the products reached an optimum value, respectively 11.32Mpa and 63.21Mpa. Key words: coal gangue；；；firing temperaturesoaking time; properties 目 录 1 引言 1 1.1煤矸石概述 1 1.1.1煤矸石的来源及化学组成 1 1.1.2煤矸石的危害 1 1.1.3 煤矸石的综合利用 2 1.2煤矸石烧结砖的发展和研究现状 3 1.2.1煤矸石制砖发展过程 3 1.2.2煤矸石制砖的研究现状 3 1.3煤矸石制备烧结普通砖的成型工艺 5 1.3.1成型机理 6 1.3.2机压压制的动力学过程 6 1.3.3机压成型特点及易产生的缺陷 7 1.4煤矸石制备烧结普通砖的烧结工艺 7 1.5研究煤矸石制备烧结普通砖的目的及意义 7 2 实验 9 2.1原料与仪器的确定 9 2.1.1原料的确定 9 2.1.2仪器的确定 9 2.2实验过程 9 2.2.1实验方案 9 2.2.2实验的工艺流程图 10 2.2.3试样的制备 11 2.3性能测试 12 2.3.1 抗折强度的测定 12 2.3.2 抗压强度的测定 13 2.3.3 收缩率的测定 13 2.3.4 吸水率的测定 14 3结果与讨论 15 3