大比例配用进口粉矿的烧结试验及生产

安钢烧结厂为应对原料条件的变化，就烧结配加进口粉矿进行了试验。以试验结果指导生产，顺利地实现了原料结构的改变，以及工艺参数的优化和生产指标的改善。     

Zeolite synthesis from paper sludge ash with addition of diatomite

BACKGROUND: This study aimed to investigate the synthesis of zeolites from paper sludge ash (PSA) with added diatomite to remove both NH₄⁺ and PO₄^3? for water purification. The PSA had low Si and significant Ca contents. Four types of diatomite: white (T‐W) and brown (T‐B) from deposits of marine origin in Takanosu, and white (S‐W) and gray (S‐G) from lacustrine deposits in Shonai, were added to NaOH solution to increase the Si content and thereby synthesize zeolites with high cation exchange capacity (CEC). RESULTS: The order of the amounts of Si extracted from the diatomite to the alkali solution was S‐W > T‐W = T‐B > S‐G, which correlates with the amorphous SiO₂ content of diatomite. The original ash without addition of diatomite yielded hydroxysodalite with CEC of about 1.0 mmol g^?1. For all samples, the addition of diatomite to the solution yielded zeolite‐P with a higher CEC, but the addition of excess Si inhibited the synthesis of zeolite‐P, and the CEC of the product was low. A product with high CEC including zeolite‐P was obtained in a solution with around 500 mmol L^?1 of Si concentration, and had the ability to remove both NH₄⁺ and PO₄^3?. CONCLUSION: Diatomite has the potential for used as an additive for the synthesis of high CEC zeolite from PSA. The product with zeolite‐P exhibited relatively high CEC, capacity for NH₄⁺ uptake, and the ability to remove PO₄^3? by precipitation, which is preferable for water purification applications. Copyright © 2008 Society of Chemical Industry     

干磨干选工艺在赤城选矿厂中的应用

赤城鑫宇选矿厂工艺流程设计中采用了干磨干选的新工艺，用来处理全铁品位为13％左右的原矿。该工艺中将原矿用干式棒磨机磨至4mm～0mm，然后进行干式磁选甩尾，甩尾产率达到36％，甩尾后原矿TFe位可达到18％，提高了入湿磨、选别的品位，有效地降低了下段磨矿的费用。该工艺投入运行后，生产情况良好。     

攀枝花矿产资源特征及循环经济发展策略探讨

文章着重描述了攀枝花矿产资源特征、资源矿物流向和资源产品定位，分析了资源矿物使用行业的不同特点，明确了针对攀枝花矿产资源利用的循环经济目标，根据资源循环利用技术水平和资源循环开发现状，提出了攀枝花矿的循环经济发展策略.     

Numerical Simulation of Independent Advance of Ore Breaking in the Non-pillar Sublevel Caving Method

The mechanism of stress generation and propagation by detonation loading in five separate independent advance of ore breaking patterns is discussed in the paper. An elastic numerical model was developed using AN- SYS/LS-DYNA 3D Nonlinear Dynamic Finite Element Software. In this package ANSYS is the preprocessor and LS-DYNA is the postprocessor. Numerical models in the paper to actual were l：10 and the element mesh was dissected in scanning mode utilizing the symmetry characteristics of the numerical model. Five different advance rates were studied. Parameters, such as the time required to maximum stress, the action time of the available stress, the maximum velocity of the nodes, the stress penetration time, the magnitude of the stress peak and the time duration for high stress were numerically simulated. The 2.2 m advance appeared optimum from an analysis of the simulation results. The results from numerical simulation have been validated by tests with physical models.     

新城金矿采场落矿控制爆破技术

新城金矿为蚀变岩型金矿床,由于受地质构造影响,顶板稳定性较差,局部和较大面积的顶板冒落现象时有发生,为了解决采场顶板安全问题和提高落矿主要技术经济指标而进行了“上向水平分层尾砂胶结充填法采场控制爆破技术”的试验研究工作,试验达到了预期效果。     

难选氧化锰矿的选别工艺特征

氧化锰矿的泥化现象一般较严重，有的矿石很容易在机械作用下碎裂泥化，并且锰在粗、细粒级中的含量差别较大，因此在选别过程中避免过碎、强搅拌、强擦洗，并利用合理的分级工序，往往能获得十分理想的选别指标。     

镇沅金精矿选择性固砷焙烧—氰化浸出新工艺研究

对云南镇沅金矿的难当金精矿进行了选择性固砷焙烧－氰化浸出的试验研究，取得了满意结果。砷固定率大于９２％，硫挥发率为７８％－８４％，金浸出率可达９１％－９３％。选择性固砷焙烧－氰化浸出新工艺可有效消除砷害，综合利用有价成分硫，特别适宜于含砷高硫，同时含碳等杂质的细粒浸染型难浸金矿石的处理，在我国有较大的发展前景。     

含碳酸盐萤石矿石全弱酸性浮选新工艺

对含碳酸盐较高的萤石矿石提出了不加纯碱的全弱酸性浮选新工艺,获得CaF_298.21％、SiO_20.67％,回收率为93.25％的良好指标,实现了低模数碳酸盐—萤石矿石的高纯分离。     

青城子矿田小佟家堡子金银矿床地质特征及成矿物质来源探讨

小佟家堡子金银矿床赋存在辽河群大石桥组PtLd^5 3和PtLd^4 3的互层带之中。矿体受层间滑脱构造控制。容矿岩石以自云石大理岩和硅质岩为主，矿体呈层就、似层就。矿石中的金以不可见金为主，金古量与毒砂关系最密切。成矿物质来源于地层——即海底火山喷气和喷流作用形成含矿热卤水，经运移在海盆边缘沉积形成矿源层或维集区，经区域变质作用和岩浆作用的改造，在印支期就位。矿床成因类型为同生沉积-变质一岩浆热液叠加再造型金银矿床。