本文選題：蒼山鐵礦 + 尾礦砂��； 參考：《西安建筑科技大學》2017年碩士論文

【摘要】：中鋼集團山東礦業(yè)有限公司蒼山鐵礦礦石儲量大,屬于鞍式貧鐵礦,選礦工藝過程中尾礦砂產量大,粒度細,硅含量高,回收難度大,回收費用高,選礦后產生的尾礦砂,一部分用于礦山井下采空區(qū)的充填,其余一部分排放到地表臨時廢舊尾礦坑堆存,坑滿后再進行覆土,但尾礦坑從征地,排放尾砂,再到后期的坑滿覆土,以及排放過程中的工程費、管理費用非常的高,為了解決鐵尾礦砂排放問題,更好建設和諧綠色礦山,通過對蒼山鐵礦尾礦砂綜合利用分析,提出利用蒼山鐵礦尾礦砂制備蒸壓加氣混凝土砌塊的項目研究,解決鐵尾礦砂的排放問題,節(jié)約建尾砂庫及回填覆土的相關工程費用,不僅能夠改善礦區(qū)周邊生態(tài)環(huán)境,而且能使鐵尾礦砂資源得到充分的合理利用。近些年來,我國建筑行業(yè)水平的大大提高,環(huán)保、綠色的程度成為建筑業(yè)發(fā)展水平的重要標志,環(huán)保、綠色工程的實施已蔚然成風。非承重墻體的主要原材料也已經由粘土磚和混凝土砌塊變成了蒸壓加氣混凝土砌塊。蒸壓加氣混凝土砌塊作為實現(xiàn)節(jié)約能源、節(jié)約土地、有效利用廢棄材料的新型墻體材料,使環(huán)境、資源及經濟協(xié)調統(tǒng)籌發(fā)展的同時,加速我們國家建筑行業(yè)的現(xiàn)代化,逐漸向產業(yè)化發(fā)展本文分析研究了中鋼集團山東礦業(yè)有限公司蒼山鐵礦尾礦砂綜合利用,通過實驗進行制備蒸壓加氣混凝土砌塊的研究,結果表明鐵尾礦砂制備蒸壓加氣混凝土砌塊能夠滿足國家相關標準及規(guī)范的要求,最后研究了利用鐵尾礦砂制備蒸壓加氣混凝土砌塊的可行性,通過研究主要得出如下結論:1)、分析當前尾礦砂露天堆放對環(huán)境造成的嚴重危害,以及尾礦處理給礦山企業(yè)增加的成本,提出通過尾礦砂制備蒸壓加氣混凝土砌塊的必要性。2)、通過試驗數(shù)據(jù)分析得出,蒼山鐵礦鐵尾礦砂制備蒸壓加氣混凝土砌塊石膏最佳摻量為3%,制品符合國家標準及規(guī)范要求。3)、通過試驗數(shù)據(jù)分析得出,蒼山鐵礦鐵尾礦砂能夠制備蒸壓加氣混凝土砌塊,并符合國家標準及規(guī)范要求,最佳配比為,鐵尾礦:石灰:石膏:水泥=70:17:3:10。4)、分析制備蒸壓加氣混凝土砌塊項目的發(fā)展規(guī)劃、產業(yè)政策及行業(yè)準入,鐵尾礦制備蒸壓加氣混凝土砌塊項目符合國家及山東省的中長期發(fā)展規(guī)劃,也符合國家對建筑廢棄物的綜合利用的相關規(guī)定,是國家大力扶持并鼓勵發(fā)展的項目。5)、分析制備蒸壓加氣混凝土砌塊項目的市場需求,蒸壓加氣混凝土砌塊是國家重點發(fā)展的符合節(jié)能建筑的墻體材料,具有節(jié)能環(huán)保的功效,將成為今后墻體材料的首選。6)、對年產30萬m3蒸壓加氣混凝土砌塊項目進行經濟效果評價,項目總投資約為1940萬元,年消耗尾礦砂129896.9噸,年利潤1256.37萬元,投資收益率64.48%,投資回收期1.5年,綜上所述,年產30萬m3蒸壓加氣混凝土砌塊的生產線可行。
[Abstract]:The Cangshan iron ore of Shandong Mining Co., Ltd of China Iron and Steel Group has large reserves and belongs to the saddle type poor iron ore. In the process of dressing, the tailings are produced with large output, fine grain size, high silicon content, great difficulty in recovery, high recovery cost, and tailings produced after dressing.One part is used for filling the underground goaf, the other part is discharged to the surface of the ground for temporary waste tailings, and then covered with earth after the pit is full, but the tailings are filled with earth from the expropriation of land, the discharge of tailings, and the late stage of the pit.In order to solve the problem of iron tailings discharge and build a harmonious green mine, the comprehensive utilization of Cangshan iron ore tailings is analyzed.The project study of autoclaved aerated concrete block made from Cangshan Iron Mine tailings is put forward to solve the discharge problem of iron tailings and save the engineering cost of building tailings reservoir and backfill soil, which can not only improve the surrounding ecological environment of mining area.Moreover, it can make full and reasonable use of iron tailings.In recent years, the level of construction industry in China has been greatly improved, environmental protection, green degree has become an important symbol of the level of development of the construction industry, the implementation of environmental protection, green engineering has become a trend.The main raw materials of non-loadbearing wall have changed from clay brick and concrete block to autoclaved aerated concrete block.Autoclaved aerated concrete block is a new type of wall material which can save energy, save land and make effective use of waste materials, so that the environment, resources and economy can develop as a whole, and at the same time, the modernization of our country's construction industry can be accelerated.In this paper, the comprehensive utilization of Cangshan iron ore tailings in Shandong Mining Co., Ltd. Of China Iron and Steel Co., Ltd is analyzed and studied, and the preparation of autoclaved aerated concrete block is studied through experiments.The results show that autoclaved aerated concrete block prepared by iron tailings can meet the requirements of relevant national standards and codes. Finally, the feasibility of preparing autoclaved aerated concrete block with iron tailings is studied.Through the research, we draw the following conclusions: 1: 1, analyzing the serious harm to the environment caused by the open pit stowage of tailings and the increased cost of tailings treatment to the mining enterprises.The necessity of preparing autoclaved aerated concrete block by tailings is put forward.The optimum amount of gypsum of autoclaved aerated concrete block in Cangshan Iron Mine is 3, and the products meet the requirements of national standards and specifications. Through the analysis of test data, it is concluded that Cangshan Iron tailings can prepare autoclaved aerated concrete blocks.The best proportion is: iron tailings: lime: gypsum: cement 70: 17: 3: 10.4, analysis of the development plan, industrial policy and industry access for the preparation of autoclaved aerated concrete blocks,The preparation of autoclaved aerated concrete blocks from iron tailings conforms to the long-term development plan of the state and Shandong Province, and also conforms to the relevant regulations of the state on the comprehensive utilization of construction waste.Is a national support and encourage development of the project. 5, analysis of the preparation of autoclaved aerated concrete block project market demand, autoclaved aerated concrete block is the key development of the state in line with energy conservation building wall materials, with the effect of energy conservation and environmental protection,It will be the first choice of wall material in the future. The economic effect of the project with annual output of 300000 m3 autoclaved aerated concrete block will be evaluated. The total investment of the project is about 19.4 million yuan, the annual consumption of tailings is 129896.9 tons, and the annual profit is 12.5637 million yuan.The investment yield is 64.48 and the investment recovery period is 1.5 years. In summary, the production line with 300000 m3 autoclaved aerated concrete block per year is feasible.
【學位授予單位】：西安建筑科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TU522.32

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