This paper research the mining press the meaning of the spirit system with the principle of basic theories and superior, application that press the windpipe net to compute the analysis method of the system theories, press the present condition of the spirit system to proceed to investigate the research to old factory tin mine of company of yunnan tin industry group, minimum tree principle within " diagram theories " of key problem, adoption that find out the esse, right pressed the windpipe net to proceeds the superior
本文闡述了研究
礦山壓氣系統的意義和壓氣管網計算的基本理論及優化原理,並運用運籌學的分析方法,對雲南
錫業集團公司老廠
錫礦壓氣系統的現狀進行了詳細的調查研究。針對目前老廠
錫礦壓氣系統存在的管網長、漏氣多、壓力損失大等主要問題,採用「圖論」中最小樹原理,對壓氣管網進行了優化研究。
In the whole city the proven mineral reserves are of 53 kinds, of which the kerogen shale is 5. 1 billion tons, kaolin over 0. 3 billion tons, ranking first in the country. rare earth and porphyrite tin are big mines on the country scale ; xinyi jade mine, reputed as " jade of the south " is one of the three big jade mines in the country
全市已查明
礦藏53種,其中油母頁巖51億噸,高嶺土儲量3億多噸,均居全國首位;稀土、斑巖型
錫礦屬全國大
礦;被譽為「南方璧玉」的信宜玉石
礦是全國三大玉石
礦之一。
It is shown that the radioactivity level of tin polymetallic ore, undressed ore and adjacent formation is affected by the strata and mineralization type, the radioactivity level of sulfide ore is not high as a whole, while that of tin ore generally is several times higher than the background value and that of debris and slag is also relatively high, whose impact on the environment is not neglectable
錫多金屬
礦原
礦及圍巖放射性水平受地層與
礦化類型影響很大,硫化
礦整體放射性水平不高,砂
錫礦卻普遍高出背景值數倍,尾
礦、爐渣放射性水平也相對較高,對環境的影響不容忽視。
Monitoring of stope stability in east panel in tongkeng tin mine
銅坑
錫礦東盤區采場的穩定性監測
At the bottom end of a soaring market, an ethnic chinese worker squats in a sluice to gather tin ore at a mine on bangka island off the sumatran coast
在蘇門答臘外海邦加島的一處
礦場,一名華裔工人蹲在一個洗
礦槽內採集著
錫礦砂。
Use : purpose : hierachial machine extensively suitable for metal ore dressing procedure go on grain size grade to ore pulp, take off the mud, dephydrates, often makes up the closed procedue with the ball mill when can be used for wshing the homenork
用途:螺旋分級機廣泛適用於金屬選
礦流程中對
礦漿進行粒度分級,也可用於
錫礦作業中脫泥、脫水,常于球磨機組成閉路流程。
After the investigation and study on alluvial tin deposit in changning dayishan mine, conclude that its geologic setting mainly iles in its structure and land form a proper scale of alluvial tin deposit were found in the limestone solution cave around dayishan granite body
摘要通過對常寧大義山砂
錫礦的調查研究,總結分析了常寧大義山砂
錫礦形成的地質條件主要受構造條件和地貌條件的影響。
On the hydrogeology and controlling factors of groundwater in the east gejiu sn orefield
個舊
錫礦東區地下水水文地質及控制因素
Shanwei city has rich natural resources. in the districts under its jurisdiction, there are 17 species of 6 kinds of minerals, of which tin, granite, kaolin, pyrite, glass sand and mineral water are of high quality and quantity, worth exploration and use
汕尾市有
礦產資源6類17種,其中
錫礦、硫鐵
礦、花崗巖、石英沙、高嶺土及
礦泉水等量多質優,具有良好的開發利用價值;沿海可供海水養殖的淺海灘塗面積3
The mineral reserves are of great quantity and high grades. there are over 40 proven species of minerals. the reserves of iron ore, tungsten, tin, fluorite and rare earth rank first in guangdong
礦產資源儲量大、品位高,已探明的有40多個品種,鐵
礦、鎢
礦、
錫礦、螢石
礦、稀土
礦等
礦產儲量居廣東首位。
The shallow analysis of tin mine and look for the mine directionof jiuyishan mine area in hunan
淺析湖南九嶷山
礦田
錫礦類型及找
礦方向
The gejiu super - large tin - copper - polymetallic deposit is famous for producing tin. but now the sustainable development of the whole gejiu ore district faces the tremendous challenge, that is to say, the ore in the surface of ground and in the shallow stratum will soon be mined completely. the situation of resources in gejiu ore district is very tension
個舊
錫銅多金屬超大型
礦區以
錫礦生產馳名世界,但經過數十年的開采,大部份探明
錫多金屬儲量已經開采消失,多數
礦山已受地質保有儲量不足困擾,達不到生產設計能力,部分
礦山甚至已到「等米下鍋」的資源危機的境地而難于維持正常生產,個舊市新建
礦業有限公司就是其中之一。
Selenium concentration and characteristics of famatinite from qiongmo gold deposit, western qinling mountains
湖南
錫礦山輝銻
礦的
礦物標型特徵研究
Redissolution of native gold from the mazhala gold - antimony deposit in southern xizang
錫礦山銻
礦床中方解石基本特徵及與
礦化的關系
Tin ore iron ore and minerals processing, marketing
鐵
礦及其伴生
錫礦加工,銷售。
Prediction of the situation for the world tin mines
世界
錫礦資源形勢預測
Research on site selection of mine tailings reservoir based on gis
以個舊
錫礦某
礦山為例
Exposures to silica mixed dust and cohort mortality study in tin miners
錫礦作業工人粉塵接觸和隊列死因分析