大冶铁矿绿色矿山建设途径研究

发布时间：2018-04-27 05:43

本文选题：大冶铁矿 + 绿色矿山　；参考：《湖北大学》2013年硕士论文

【摘要】：2010年国土资源部颁布了《关于贯彻落实全国矿业资源规划发展绿色矿业建设绿色矿山工作的指导意见》,提出力争1-3年完成一批示范试点绿色矿山建设工作。大冶铁矿于2012年进入国家级绿色矿山建设试点名单。本文以大冶铁矿绿色矿山建设为研究对象,通过现场踏勘、环境监测、生态调查、资料收集等方法,对照《国家级绿色矿山基本条件》的要求,以国家相关政策、标准为依据,采用现场调查法、资料分析法、项目类比法、专家咨询法等手段,开展了大冶铁矿绿色矿山建设途径研究。大冶铁矿是武钢的重要原料基地,经过数十年的开采,矿石资源已逐渐枯竭,生产能力已从最初300万吨/年下降至120万吨/年,开采方式从最初露天开采转为井下开采,并逐渐向深部发展。大冶铁矿绿色矿山建设存在的主要问题是：①随着开采深度的增加,矿体回采难度增大,残矿、难采矿体将增多；②伴生矿资源回收效率偏低；③废石尾矿综合利用率亟待加强；④废水循环利用率79.9%偏低,球团二氧化硫总量控制不能满足要求；⑤现有土地复垦率45%,剩余5000亩废石场有待复垦；⑥存在高陡边坡约10×104m2,20000m排截水沟等地质环境问题需进一步整治。本文分近期和远期(展望期)提出了绿色矿山建设目标和建设任务。其绿色矿山建设的重点是资源高效开发和综合利用。用充填法采矿工艺替代现有崩落法采矿工艺,可提高矿石回采率10%,降低矿石贫化率10%。加强金、银、铜、硫等伴生矿选矿回收,可显著改善矿山经济效益,支持矿山可持续发展。依据绿色矿山建设任务,提出了重点工程,近期项目18项,合计投资116985.41万元；远期项目9项,合计投资21639万元。通过重点工程的实施,采矿回收率、选矿铁回收率、铜回收率分别达到85%；采矿贫化率小于12%；废石利用率提高15个百分点达到36%；尾矿利用率提高45百分点达到56%；废水循环利用率提高5个百分点达到85%；土地复垦率提高10个百分点达到55%。至2015年可全面实现绿色矿山建设目标,至2020年大冶铁矿在绿色矿山建设方面将取得更大业绩,为资源枯竭型企业转型发挥引领和示范作用。
[Abstract]:In 2010, the Ministry of Land and Resources promulgated the "guiding opinions on implementing the National Mining Resources Plan for the Development of Green Mines" and proposed that a number of demonstration pilot green mine construction work should be completed in 1-3 years. Daye Iron Mine in 2012 into the national green mine construction pilot list. This paper takes the construction of green mine in Daye Iron Mine as the research object, through the methods of field exploration, environmental monitoring, ecological investigation and data collection, contrasts with the requirements of "basic conditions of National Green Mine", and bases on the relevant national policies and standards. By means of field investigation, data analysis, project analogy and expert consultation, the construction of green mine in Daye Iron Mine is studied. Daye Iron Mine is an important raw material base of WISCO. After decades of mining, ore resources have gradually dried up, the production capacity has dropped from the initial 3 million tons per year to 1.2 million tons per year, and the mining mode has changed from initial open-pit mining to downhole mining. And gradually to the deep development. The main problem in the construction of green mine in Daye Iron Mine is that with the increase of mining depth, it is more difficult to recover ore body, and the recovery efficiency of associated mineral resources is low. (3) the comprehensive utilization ratio of waste tailings needs to be strengthened urgently, 79.9% of waste water recycling efficiency is on the low side, the total amount control of pellet sulfur dioxide can not meet the requirements of 45% of the existing land reclamation rate, and the remaining 5000 mu of waste rock fields need to be reclaimed; (6) the geological environmental problems of high and steep slope, such as 10 脳 10 ~ 4 m ~ (2 +) ~ 2 000 m water cut gully and so on, need to be further remedied. In this paper, the aim and task of green mine construction are put forward in the short and long term. The key point of its green mine construction is the efficient exploitation and comprehensive utilization of resources. By replacing the existing caving mining process with filling mining process, the recovery rate of ore can be increased by 10% and the dilution rate of ore can be reduced by 10%. Strengthening the recovery of gold, silver, copper, sulfur and other associated minerals can significantly improve the economic benefits of mines and support the sustainable development of mines. According to the task of green mine construction, this paper puts forward the key projects, 18 items of recent projects, with a total investment of 1.1698541 billion yuan, and 9 items of forward projects, with a total investment of 216.39 million yuan. Through the implementation of key projects, mining recovery rate, iron recovery rate, Copper recovery reached 85% respectively; mining dilution rate was less than 12%; utilization ratio of waste rock increased 15% to 36%; utilization ratio of tailings increased 45% to 56%; recycling efficiency of waste water increased 5% to 85%; and land reclamation rate increased. Ten percent reached 55 percent. By 2015, the goal of green mine construction can be fully realized. By 2020, Daye Iron Mine will make greater achievements in green mine construction, and play a leading and exemplary role in the transformation of resource-exhausted enterprises.
【学位授予单位】：湖北大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：F426.1

【参考文献】