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According to the property of mud of gas of plum steel blast furnace, undertook to its zincic experiment studies receiving iron to fall, no matter use magnetic separation,the result makes clear or classification the law all can reclaim from which content of major iron ore and purify is major zinc, stock of will tall zinc, low zinc undertakes effective depart, iron concentrate yield and grade all achieve 52% above, iron metal reclaims rate 70%, take off zinc to lead 50% above.

梗概: 介绍了梅钢高炉瓦斯泥的性质、试验情况及结果,国内外处理使用含锌高炉瓦斯泥的方法。根据梅钢高炉瓦斯泥的性质,对其进行了收铁降锌的试验探究,结果表明无论用磁选还是分级法均能从中回收大部分铁矿物并去除大部分锌,将高锌、低锌物料进行有效分离,铁精矿产率和品位均达到52%以上,铁金属回收率70%,脱锌率50%以上

The effects of the treatment show that the best effect is achieved by pillar ed acidified bentonite,whose COD removal efficiency is more than 80% and chroma removal efficiency is more than 95%.

处理效果最佳的是柱撑酸化膨润土,其对染料废水COD的去除率可达80%以上,色度去除率可达95%以上

The bioassay results showed that the quaternary ammonium salt had a good intihtion against typical microorganisms such as heterotrophic bacteria,ammonifying bacteria,denitrifying bacteria and nitrosation bacteria with its inhibition rate was above 90%. Inhibition of the quaternary ammonium salt to fungi and sulfate reducting bacteria was above 85% after 30 min. Inhibition of the quaternary ammonium salt to black mold was about 84% after 30 min,and the to algae was totally inhibited after 24 h.

高分子抗菌杀生剂的抗菌灭藻性能的检测结果表明,作用30 min对贵阳市雅河水中的异养菌、氨化细菌、反硝化细菌、亚硝化细菌的杀菌率在90%以上,真菌、硫酸盐还原菌的杀菌率在85%以上;对黑曲霉的杀菌率在84%,其作用24 h可将小球藻基本杀灭。

The province's exports of mechanical and electrical and high-tech products increased by 48% and 75%, copper ingots, billets, plastic raw materials, cement and other resource exports were down 100% and 64%, 56%, 35% or more.

全省机电及高新技术产品出口分别增长48%和75%以上,铜锭、钢坯、塑料原料、水泥等资源类产品出口分别下降100%和64%、56%、35%以上

Soil and water loss in the gullied loess hilly region in northern Shaanxi attracts worldwide attention, where soiseasonable distribution of contour shrub belt is of significant soil and water conservation effect with runoff decrease of over 30%, sediment reduction of more than 50%, and it can also increase plant coverage of 15% to 20% on slope farmland and forms shrub network on hill slope,and change the situation of ecological environment deterioration and sparse vegetation.

摘 要]陕北黄土丘陵区的水土流失问题举世瞩目,而坡耕地的水土流失尤为严重。资料表明,配置合理的等高灌木带具有较强的保持水土效益,其径流削减率在30%以上,泥沙削减率在50%以上,可增加坡耕地植被覆盖度15%~20%,在峁坡上能很快形成林网,大大改观坡耕地长期植被稀疏、生态环境恶化状况。

Mean period of oviposition each adult is 32.2±9.04 days at 29℃ and mean number of eggs oviposited per female is l62±11.32 eggs at 30℃ high moisture.

在24—30℃条件下,卵历期为4—7天,孵化率为60%以上;在9—10℃时为12天,卵的死亡率80%以上。幼虫历期随龄数增多而延长。在20℃条件下,幼虫能形成蛹。

The results show that the dosage and cost of their triturated cogulator are the lowest, COD removal rate is over 86%, SS removal rate is over 90%,and the end effluent meets the discharge standard.

结果表明,使用该所研制的KN—Ⅰ絮凝剂处理厌氧出水,絮凝剂的用量、费用最低,COD去除率达到86%以上,SS去除率达到90%以上,最终出水达到国家排放标准。

Then in another tower, of which the height was 1.6m and the inner diameter was 20mm, the pentanol mixture was exactly rectified. The influence factors on separation effect, for example, the material concentration, evaporation velocity, circumfluence rate.etc, were studied and a set of separation system about salt-out -exactitude rectify was upbuilt. The result showed: when the material concentration was 60%, we got our product, 2-methyl-1-butanol, with the concentration over 99% and the top quality recovery over 82.7% which would increase as the material concentration did.

在高1.6m,内径为20rnm的精馏塔内,对戊醇混合物进行精密精馏,研究了原料浓度、蒸发速率、回流比等因素对分离效果的影响,建立了一套盐析-精密精馏的分离体系,结果表明:原料中2-甲基-1-丁醇浓度60%时,得到的2-甲基-1-丁醇产品浓度在99%以上,最高收率达82.7%以上,且随着原料浓度的增加而进一步增大。

After optimizing the expression conditions, a higher production could be obtained when GS115-proCPB was induced in BMGY(pH 6.0), at 28℃, with addition of 0.5% casein acid, 3 mmol/L PMSF, and 0.5% methanol per 12 h. The yield of recombinant protein reached 500 mg/L, and achieved over 94% of total protein in the culture supernatant.

通过表达条件的优化,使用BMGY(pH 6.0)培养基,添加0.5%的酪蛋白水解物和3 mmol/L的PMSF,于28 ℃培养,每隔12 h补加0.5%的甲醇,重组酵母GS115-proCPB 表达的重组蛋白可达500 mg/L 以上,表达的目的蛋白占总蛋白的94%以上

A new production process is proposed,in which the acid sludge is removed and the pickling liquor is neutralized once with lime milk after defluorination .

工业试验结果表明,新工艺能使磷矿石中磷的利用率由现有工艺的近60%提高到85%以上,脱氟液中磷氟质量比由240左右提高到300以上,产品收率提高20%以上,产品质量也大大提升,并显著降低了原料消耗及生产成本。

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