查询词典 collophanite

The flotation mechanism of MG reverse-floating dolomite was studied by measuring the Zeta-potential of collophanite and dolomite, Infrared Absorptions Spectra analysing the adsorption of MG onto the minerals surface, ultraviolet- visible light absorbing spectrum calculating the amount of MG which was adsorbed onto the minerals surface. These researches showed that MG was more easyly adsorded onto the surface of dolomite in feeble acidic solution because of pure dolomite charges positive as well as pure collophanite charges negative. Therefore, a lot of MG negative ions was adsorded onto dolomite, and that MG negative ions contained hydrophobic group, the hydrophobicity of dolomite was modified, the grains of dolomite were adhered to air bubble and float with them.

对白云石和胶磷矿的Zeta-电位测定、红外光谱分析MG药剂在矿物上面的吸附情况、紫外-可见吸收光谱测定矿物上MG的吸附量等，研究了MG药剂反浮选白云石的浮选作用机理，表明在弱酸性条件下，由于白云石表面荷正电而胶磷矿表面荷负电，带有羧基和羟基官能团的MG药剂更容易吸附在白云石上，使其周围吸附有大量的MG负离子，而MG负离子的另一端为烃基，这就改变了白云石的疏水性，使其矿粒容易附着于气泡上浮。

This kind ofcollector was also used to float actual phosphate ore, and was compared to sodium oleate and SR, the results of flotation indicated that MG was adapt to reverse flotation processing of collophanite, it is a kind of excellent collector.

该药剂用于实际矿物的浮选时与油酸钠、SR等药剂的对比表明，它是适合于胶磷矿的反浮选工艺的，是一种优良的捕收剂。

The gemini anionic surfactant is able to enhance the collophanite floating capability of oleic acid.

目标化合物能一定程度增强油酸对胶磷矿中白云石的浮选能力。

Because collophanite usually combines with dolomite, and their flotability is similar so that they can not be separated by the conventional flotation method.

由于胶磷矿多含有白云石且两者可浮性相近，因此运用浮选方法一直没能很好地解决胶磷矿中自云石的分离问题。

To this problem, according to the differences of physical chemistry properties between collophanite and dolomite, the raw material which is cheap and extensive had been choosen to synthesize a new efficient andcompound collector——MG, which was used for floating domolite.

针对这一难题，本文着眼于胶磷矿和白云石的一些表面物理化学性质的差异，选择来源广且价格便宜的原料，通过实验研究合成出新型高效复配脱镁捕收剂——MG。

New collectors and two-stage reverse flotation technology were adopted to process collophanite ore according to the ore properties,and satisfactory results has been obtained.

通过研究矿石性质，采用新药剂以及双反浮工艺处理胶磷矿，获得了满意的指标：原矿P2O5品位24.36%，MgO含量4.21%，综合精矿P2O5品位32.96%、回收率91.80%，含MgO0.87%、

In recent years, Yihua greatly enhanced its self-determined scientific and technological ability for innovation. It implemented over 200 items of new techniques, developed over 20 items of state-level or province-level new products, declared over 100 patents of invention and achieved over 50 items of state-level, province-level or city-level important scientific and technical achievements, among which, the YH Non-break Molding Powder Coal Gasification Technique was for the first in the world applied in mass production device of urea. Yihua%26rsquo;s Technique of Pressure-swing Decarbonization Absorber won a national gold prize for patent of invention. Its Technique of Heavy-medium Ore Beneficiation and Twice Versa Floatation successfully solved the global problem that collophanite could%26rsquo;t be used to produce DAP.

近两年，宜化开发并实施了300多项新技术新工艺，开发了20多项国家级、省级新产品，申报了200多项发明专利，取得了50多项国家、省、市级重大科技成果，具有极强的自主创新能力，其中YH粉煤连续成型气化技术成为世界第一家大规模用于尿素生产的装置；变压吸附脱碳获得了国家发明专利金奖；重介质选矿和双反浮选技术成功地解决了胶磷矿不能生产磷酸二铵的世界难题。

Key words: collophanite; mineral beneficiation; flotation; adoption of low grade thermal energy in sulfuric acid plant; reducing steam consumption

胶磷矿；选矿；浮选；硫酸低位热能利用；降低蒸汽消耗

Vanadium mainly exists as independent minerals or in clay minerals in the form of isomorphism, with a small amount absorbed by clay minerals and limonite. Nickel mainly exists as independent minerals. Molybdenum occurs as colloidal sulfides with carbon, sulfur and clay, and forms molybdenite through thermal metamorphism. Uranium is unevenly scattered in collophanite and carbonaceous_argillaceous materials in the form of isomorphism or adsorption. REE mainly occur in collophanite in the form of isomorphism. Copper, lead and zinc chiefly exist in sulfides or sulfo_arsenides and are concentrated in the metallic layer.

钒或以独立矿物存在，或以类质同象赋存在粘土矿物中；镍主要以独立矿物存在；钼主要与碳、硫、粘土一起呈钼硫化物胶状集合体，经热接触变质作用后形成辉钼矿；铀呈不均匀分散在胶磷矿和碳泥质中，呈类质同象或吸附状态存在；稀土元素主要呈类质同存在于胶磷矿中，部分呈吸附状态存在；铜、铅、锌主要以硫化物和硫砷化物等存在，多富集在金属层中。

To the collophanite of certain region, Liaoning Province, the content of P_2O_5 was 19.50% and MgO was 6.87%. Using MG as collector to reversely float dolomite, its concentrate can be upgraded to 24.68%(P_2O_5), and the P_2O_5 grade of concentrate of sodium oleate as collector was only 21%. Simultaneity, the recovery of P_2O_5 of concentrate was 83.20%; the tailing contained P_2O_5 only 10%, it obviously declined compareing with sodium oleate.

对于辽宁某地胶磷矿(原矿含P_2O_5 19.50％，MgO 6.87％)，使用MG药剂及单一反浮选工艺，可获得P_2O_5品位24.68％的精矿，较传统的油酸钠提高约3个品位，磷回收率83.20％，而尾矿P_2O_5品位仅为10％左右，比油酸钠等的尾矿P_2O_5有明显下降。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。