胶磷矿

Expiate one's sins by acts of penance.

磷矿还起胶结剂的作用。

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

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。