期刊文献+
共找到6篇文章
< 1 >
每页显示 20 50 100
河北某地含钒钛磁铁矿矿床的物质成分和伴生有益组分赋存状态研究
1
作者 Geochemistry Speciality, Department of Geology and Geography, Peking University 《地球化学》 CAS 1977年第3期219-226,237-238,共10页
The regional stratigraphy composed mainly of pre-Sinian gneisses migmatizationized to raring extent. Basic complexes, consisting largely of anorthosite andmeasuring more than 40 km in length and 2 to 9 km across, empl... The regional stratigraphy composed mainly of pre-Sinian gneisses migmatizationized to raring extent. Basic complexes, consisting largely of anorthosite andmeasuring more than 40 km in length and 2 to 9 km across, emplaced along a E--W trending fault zone. Most of the ore bodies occur within the anorthosite. The principal ore minerals include: Ti-magnetite, ilmcnite, oysanite, futile, pyrite, pyrrhotite, chalcopyrite, linnaeite, Ni-bearing linnaeite, [(Ni, Co)3 S4], millerite, and cubanite. Mode of occurrence has been confirmed by phase analyses for Fe, Ti, V,Co, Ni and other elements. It is proposed that step-wise grounding will be beneficial to raising the grade of Ti concentration, reducing Ti content in Fe concentration as well as to the recovery of Co, Ni and other elements. The validity of this process has been justified by encouraging resutls. 展开更多
关键词 含钒钛磁铁矿 矿床化学 赋存状态 伴生有益组分
下载PDF
河北省滦平县红旗东沟铁矿矿床特征及找矿简析
2
作者 张文纲 《华北自然资源》 2023年第1期60-62,66,共4页
红旗东沟铁矿位于滦平县红旗镇红石砬—大庙深大断裂带南侧,沿该断裂带的南北两侧形成了以晚元古代辉石角闪石岩、辉石岩为代表的铁质超基性岩体。铁矿体产于辉石角闪石岩中,基于岩浆分异作用,先后形成细粒和中粗粒的辉石角闪石岩,岩石... 红旗东沟铁矿位于滦平县红旗镇红石砬—大庙深大断裂带南侧,沿该断裂带的南北两侧形成了以晚元古代辉石角闪石岩、辉石岩为代表的铁质超基性岩体。铁矿体产于辉石角闪石岩中,基于岩浆分异作用,先后形成细粒和中粗粒的辉石角闪石岩,岩石矿物晶型完整无破碎,并在矿物颗粒间形成含钒钛的超贫磁铁矿,最终形成团块状、囊状钒钛磁铁矿矿体,属大庙式钒钛磁铁矿一类矿床。 展开更多
关键词 超贫磁铁矿 含钒钛磁铁矿 岩浆晚期分异 铁质超基性岩体
下载PDF
黑山铁矿③、⑥、⑧矿体成矿地质特征与矿床成因浅析 被引量:1
3
作者 李少京 代伟 杜志松 《中国金属通报》 2018年第7期33-34,共2页
元古代中期,在丰宁—隆化和红石砬—大庙两条深断裂带之间,大庙—黑山地段在莫霍面附近生成高铝碱性玄武岩。在高温高压下,原始岩浆大体分离成三层熔浆:上层为硅铝熔浆,中层为铁铝镁熔浆,底层为含钒钛磁铁矿的铁矿浆。
关键词 深断裂 含钒钛磁铁矿
下载PDF
Effect of B2O3 addition on oxidation induration and reduction swelling behavior of chromium-bearing vanadium titanomagnetite pellets with simulated coke oven gas 被引量:3
4
作者 Wei-dong TANG Song-tao YANG Xiang-xin XUE 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2019年第7期1549-1559,共11页
The oxidation induration and reduction swelling behavior of the chromium-bearing vanadium titanomagnetite pellets (CVTP) with B2O3 addition were investigated. Besides, the reduction swelling index (RSI) and compressiv... The oxidation induration and reduction swelling behavior of the chromium-bearing vanadium titanomagnetite pellets (CVTP) with B2O3 addition were investigated. Besides, the reduction swelling index (RSI) and compressive strength (CS) of the reduced CVTP were also examined using the simulated coke oven gas (COG). The results suggested that the CS of CVTP was increased from 2448 to 3819.2 N, while the porosity of CVTP was decreased from 14.86% to 10.03% with the increase in B2O3 addition amounts. Moreover, the B2O3 mainly existed in the forms of TiB0.024O2 and Fe3BO5 in both CVTP and the reduced CVTP. Specifically, the CS of the reduced CVTP was elevated from 901 to 956.2 N, while the RSI was reduced from 5.87% to 3.81% as the B2O3 addition amounts were increased. Taken together, B2O3 addition would facilitate the aggregation and diffusion of metallic iron particles, which contributed to reducing the formation of metal iron whiskers and weakening the reduction swelling behavior. 展开更多
关键词 B2O3 oxidation induration reduction swelling index coke oven gas chromium-bearing vanadium titanomagnetite pellets
下载PDF
Effects of MgO/Al2O3 ratio on viscous behaviors and structures of MgO-Al2O3-TiO2-CaO-SiO2 slag systems with high TiO2 content and low CaO/SiO2 ratio 被引量:7
5
作者 Cong FENG Li-hua GAO +2 位作者 Jue TANG Zheng-gen LIU Man-sheng CHU 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2020年第3期800-811,共12页
The effects of MgO/Al2 O3 ratio on the viscous behaviors of MgO-Al2 O3-TiO2-CaO-SiO2 systems were investigated by the rotating cylinder method.Raman spectroscopy was used to analyze the structural characteristics of s... The effects of MgO/Al2 O3 ratio on the viscous behaviors of MgO-Al2 O3-TiO2-CaO-SiO2 systems were investigated by the rotating cylinder method.Raman spectroscopy was used to analyze the structural characteristics of slag and Factsage 7.0 was adopted to demonstrate the liquidus temperature of slag.The results show that the viscosity and activation energy for viscous flow decrease when the MgO/Al2O3 ratio increases from 0.82 to 1.36.The break point temperature and liquidus temperature of slag initially decrease and subsequently increase.The complex viscous structures are gradually depolymerized to simple structural units.In conclusion,with the increase of MgO/Al2O3 ratio,the degree of polymerization of slag decreases,which improves the fluidity of slag.The variations of liquidus temperature of slag lead to the same changes of break point temperature. 展开更多
关键词 vanadium-bearing titanomagnetite titanium-bearing slag viscous behavior degree of polymerization of slag MgO/Al2O3 ratio
下载PDF
Effect of nickel oxide additive on smelting mechanism of chromium-bearing vanadium titanomagnetite pellets 被引量:1
6
作者 Gong-jin CHENG Wei-dong TANG Xiang-xin XUE 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2021年第8期2501-2510,共10页
The effect of nickel oxide additive on the smelting behaviors of chromium-bearing vanadium titanomagnetite pellets(CVTP)was investigated while analyzing the transfer behavior of nickel in iron and slag.The results sho... The effect of nickel oxide additive on the smelting behaviors of chromium-bearing vanadium titanomagnetite pellets(CVTP)was investigated while analyzing the transfer behavior of nickel in iron and slag.The results show that when NiO added to CVTP increases from 0 to 6 wt.%,softening start temperature increases from 1148 to 1212℃,and the softening end temperature increases from 1280 to 1334℃;the melting start temperature increases from 1318 to 1377℃,and the dripping temperature decreases from 1558 to 1521℃.The pig iron comprises a compound of Fe-Ni-C.The slag structure depolymerizes with increasing nickel addition.The softening-melting behaviors of CVTP,the reduction of nickel into pig iron,and the depolymerization of slag structure indicate the feasibility of producing nickel-iron alloy through the blast furnace process. 展开更多
关键词 nickel-iron alloy chromium-bearing vanadium titanomagnetite pellets smelting mechanism slag structure
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部