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通过野外地质调查及岩矿鉴定,结合多元素分析、物相分析、矿物组成测定、钨元素嵌布粒度测定、主矿物单体解离度测定等赋存状态及其分布规律,通过工艺矿物学研究可知,瑶岭周边矿区钨矿石属于石英脉型钨矿石。 相似文献
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《中国钨业》2015,(5)
采用MLA技术对难选低品位钨钼矿石进行详细的工艺矿物学研究,测定了矿石矿物组成、嵌布粒度和解离度等工艺矿物学参数,为制定合理的选矿流程提供详实可靠的依据。结果表明,矿石中的主要有价矿物为白钨矿和辉钼矿;脉石矿物以石榴石(钙铁榴石、钙铝榴石)、透闪石、普通辉石、透辉石等磁性脉石为主,还有部分非磁性脉石石英、长石、萤石和方解石等。脉石矿物中富钙脉石含量较高,将对白钨矿选矿产生一定的影响。基于工艺矿物学的研究结果,选矿试验设计了强磁预先丢尾-先浮钼后浮钨的工艺技术路线,取得了钼精矿产率为0.125%,钼品位48.85%,钼回收率64.86%;钨精矿产率为0.27%,WO3品位65.23%,钨回收率74.22%的较好选矿技术指标。 相似文献
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结合传统工艺矿物学研究方法,采用MLA自动检测方法对某石英细脉型钨钼多金属矿石进行工艺矿物学研究,研究结果表明:该矿石中钨矿物以黑钨矿为主,并且白钨矿交代黑钨矿现象较普遍,形成有具黑钨矿外形,而化学组成为白钨矿的假象白钨矿。矿石中黑钨矿、白钨矿的嵌布粒度相似,以白钨矿略粗,嵌布粒度主要在0.02~0.32mm范围。钼主要以辉钼矿矿物形式存在,嵌布粒度较粗,主要在0.04~0.64mm范围。当磨矿细度为-0.074mm占38.17%时,钨矿物总解离度为79.61%,辉钼矿总解离度为88.34%。此外矿石中伴生铋和银,铋矿物种类复杂,并且是银的主要载体,银可随铋的富集得以回收。钨钼铋的赋存状态研究表明,该矿石钨的理论回收率较高。 相似文献
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Studies evaluating nutritional and seasonal influences on hoof strength and composition in horses, as well as the scientific justification for feeding supplements to improve hoof quality, are lacking. The horseman and veterinarian need controlled studies in this area to make informed decisions. This project quantified, in 2 trials, relative elasticity, tensile strength, % moisture, and mineral composition of hooves of 48 mature Thoroughbred mares maintained on different nutritional/management regimens, sampled quarterly over 12 month periods. Tensile strength was positively associated with sulphur content. Per cent moisture was not significantly associated with tensile strength, relative elasticity, or mineral content measures. Results indicated that both seasonal trends and nutritional regimes greatly affected hoof wall strength and mineral composition. 相似文献
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通过野外地质调查、镜下鉴定及对矿床以往资料的综合研究,对茶洞银多金属矿床地质特征、矿石组构、矿物成分、成矿期及成矿阶段进行分析总结,并对矿床成矿作用过程进行了初步探讨。结果表明:矿床矿石具浸染状、脉状、网脉状及块状构造,结构以自形-半自形粒状、不规则粒状和交代为主。矿石成分以氧化物和硫化合物为主,矿物组合主要为银(金)-铅锌系列,以硫化物为主,代表矿物有黄铁矿、毒砂、方铅矿及银矿物等。矿物组合表现为中低温矿物组合特征,成矿温度以中低温为主。矿床成矿过程具有多期、多阶段特点,其中气水热液成矿期为主成矿期,可进一步划分为石英-硫化物阶段和碳酸岩-铅锌硫化物阶段,茶洞银金矿床是在地层、构造及岩浆岩等因素共同作用下形成的中低温热液型矿床。 相似文献
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通过对某铁精矿的工艺矿物学研究,查明矿石矿物组成、矿物的嵌布特征及铁和磷的赋存状态.此铁精矿中,铁矿物主要为褐铁矿、赤铁矿和磁铁矿,脉石矿物以石英、白云石、白云母、高岭石为主.最后阐述了影响选矿工艺的因素及措施. 相似文献
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文章研究了在包钢烧结混合料中配加蒙古矿的烧结特性,并对烧结矿的矿物组成及冶金性能进行了对比,结果表明,蒙古矿的配加,使烧结矿转鼓强度升高,固体燃耗下降。因此,配加蒙古矿是提高烧结矿产质量及降低固体燃耗的重要措施,2010年蒙古矿在包钢烧结应用中取得了良好的效果。 相似文献
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在线品位分析仪是矿物加工连续生产过程中关键参数的自动检测装置之一。本文重点介绍现代选矿过程中所采用的几种不同类型品位在线分析仪之测量原理、仪器组成及其特点,特别对品位分析仪的应用及其产生的经济效益进行介绍。 相似文献
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在线品位分析仪是矿物加工连续生产过程中关键参数的自动检测装置之一。本文重点介绍现代选矿过程中所采用的几种不同类型品位在线分析仪之测量原理、仪器组成及其特点,特别对品位分析仪的应用及其产生的经济效益进行介绍。 相似文献
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为阐述烧结过程熔融机制和成矿机制,明确MgO、Al2O3质量分数对烧结液相生成和矿物组成的影响是至关重要的。利用Factsage软件计算Fe2O3 SiO2 CaO Al2O3 MgO体系的液相生成,计算氧分压在500Pa时,不同温度,不同MgO、Al2O3质量分数下体系液相生成和液相区分布的影响。通过烧结试验,分析烧结矿的矿相和矿物成分,结合软件计算得出烧结矿中MgO质量分数为2.0%、Al2O3质量分数为3.0%时其液相量、矿相、矿物成分达到最优适合烧结冶炼的标准。 相似文献
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The four-compartment model of body composition was studied in 112 healthy black women to develop normative data to be used to assess deviations in illness. Each compartment was measured by an independent method: tritiated water dilution, prompt-gamma neutron activation analysis (for nitrogen), inelastic neutron scattering (for carbon) and dual energy x-ray absorptiometry (for calcium). The mean age of the population was 43.2 years. Race was self-declared. The mean values for the four compartments were [kg SE] protein: 9.6 (0.07); mineral 3.0 (0.03); fat 24.2 (0.70); and water 33.1 (0.29). Each of the compartments changed significantly with age (P < .0001). There were declines in total body water, mineral, and protein, whereas fat increased linearly with age. Linear regressions performed on pre- and postmenopausal women showed a significant difference only for the mineral compartment. Various models were fit to the data to adjust for body size and age. The equation y = age + height + weight fits the data as well as the other models. Equations and graphs were developed to assess each compartment using this linear model and may be used to assess the body composition status of healthy and ill black women. Although black women tended to be heavier than white women, after controlling for differences in body weight (and age) black women had a greater mass of protein, mineral, and water and a similar fat store. These differences, while statistically significant, were not of great magnitude. This was a cross-sectional study and suspected trends with aging must be confirmed by a longitudinal study. 相似文献