铬

After the wastewater was treated by using lead chrome yellow production technology in fact, the concentration of hexavalent chromium was 0.361 nig/L, pH value was 6.24, the concentration of total chromium was 0.963 mg/L and CODer was 67.200 mg/L. The standard exponents of all indices were all teas than 1, so the standard-attainment discharge could be realized.

采用铅铬黄生产工艺实际治理污水后，6价铬浓度为0.361 mg/L、pH值为6.24，总铬浓度为0.963 mg/L，CODcr为67.200 mg/L，各项指标标准指数均小于1，可以实现达标排放。

There are 23 die-casting machines with monotone 25T, 63T, 68T, 100T, 130T, 180T, 280T, 400T, 630T,( we planned to buy a 800T die casting machine) etc. And we also obtain CNC, a manual and full automatic painting-roasting assembly line, a mould-spraying assembly line. We can do many kind of electro-finishing, such as Chromium, Sand Chromium, 3+ Chromium, Wire drawing Nickel, Sand Nickel, Bronze and Clinquant, etc.

现有锌、铝压铸机共计23台，分别有25T、63T、68T、100T、130T、180T、280T、400T、630T，并计划添置一台800T；CNC精密加工中心；烤漆、喷塑生产线一条；锌、铝合金产品半自动生产电镀线一条，能接受各种产品表面电镀处理，如：镀铬、砂丁铬、三价铬、拉丝镍、砂丁镍、青古铜、仿金等。

It is shown that calcium carbonate can be decomposed in aqueous sodium dichromate solution and transformed to calcium chromate at ambient pressure and boiling temperature.

介绍了一种制取铬酸钙的新方法，利用重铬酸钠溶液分解碳酸钙，可以得到高纯度的铬酸钙。

The practice is introduced for producing extra-low carbon ferrochromium with Perrin process of adding some silico-chromium to reduce FeO in molten chrome ore-lime to increase the ratio of Cr/Fe , and producing high chromium products (Cr≥72%) with this melt.

介绍了波伦法冶炼微碳铬铁过程中，先加入部分硅铬还原铬矿-石灰熔体中的Feo，以提高Cr/Fe；然后用此熔体生产出含Cr≥72％的高铬产品的生产实践。

The key products of the company are high alumina brick ,fireclay brick ,phohate-bonded wearable brick,exfoliation-resistant high alumina brick,High refractorine under load brick,corundum brick,magnesite brick,magnesite chrome brick,series of corundum,SIC furnace chamber and pipe , ceramisite brick, corundum-mullite brick,corundum-chrome brick,sillimanite brick,magnesite alumina inel brick,acid-resistant brick,alkali-resistant brick , zirconia-corundum brick , alumina bule products, series thermal iulating refractory products ,high alumina castable,corundum castable ,corundum ramming ,brown-corundunm castable ,SiC castable ,low-cement castable ,alkali resistant castable ,Light silica alumina products, stainle steel fibre reinforced castable ,etc.

主要产品有：高铝质砖、粘土质砖、磷酸盐耐磨砖、抗剥落砖、高荷软砖、刚玉砖、碳化硅砖、镁砖、镁铬砖、各种刚玉、SIC炉膛、炉管制品、陶粒砖、刚玉莫来石砖、铬刚玉砖、硅线石砖、镁铬尖晶石砖、耐酸砖、耐碱砖、锆刚玉砖、氧化铝空心球制品及各种轻质保温材料、高铝质浇注料和刚玉浇注料、捣打料、棕刚玉浇注料、碳化硅浇注料，低水泥浇注料、抗碱性浇注料、轻质硅酸铝制品、钢纤维增强浇注料等80余种系列耐火材料。

The optimum process conditions of treating chromium-contained wastewater with low concentration and the optimum reflux rate of settled bottom stream of flocculate are obtained.

以长沙铬盐厂的含铬废水为试验水样，研究了用七水硫酸铁、亚硫酸氢钠、铁屑 3种还原剂达标处理较低浓度含铬废水的适宜工艺条件和悬浮液絮凝体沉降底流的最佳回流率。

Long-term with the Luoyang Refractory Material Research Institute, Beijing University of Science and Technology, Anshan University of Science and Technology, such as metallurgy research institutions to collaborate, has developed the metallurgy, coking industry in various grades×, silica brick, clay brick, magnesia brick, magnesia-chrome brick, MgO-C Bricks aluminum, chromium corundum brick, insulation brick light, etc.; cement industry with anti-spalling×, alkali brick, silicon brick Mo, direct combination of magnesia-chrome brick, periclase-spinel brick, phosphorus acid brick, high-phosphate soft Dutch bricks, special bricks, such as phosphate; generating boiler industry with a variety of brands wear-resistant brick, corundum brick, mullite brick, such as stereotyped products and wear resistant castable, corundum castable, high-strength low cement castable, impermeable material, gravity feed can be plastic, various grades, such as fire-resistant mud Unshaped Materials, in which silica brick and light insulation brick production line for the national output of a single one of the largest production line.

公司长期与洛阳耐火材料研究院，北京科技大学，鞍山冶金科技大学等科研院校开展协作，先后开发出冶金，焦化行业用各种牌号高铝砖，硅砖，粘土砖、镁砖，镁铬砖，铝镁碳砖，铬刚玉砖，轻质隔热砖等；水泥行业用抗剥落高铝砖，耐碱砖、硅莫砖，直接结合镁铬砖、方镁石尖晶石砖、磷酸盐砖，高荷软磷酸盐砖、特种磷酸盐砖等；发电锅炉行业用各种牌号耐磨砖，刚玉砖，莫来石砖等定型产品和耐磨浇注料、刚玉浇注料、低水泥高强浇注料、防渗料，自流料，可塑料、各种牌号耐火泥等不定型材料，其中硅砖和轻质隔热砖生产线为全国单台产量最大的生产线之一。

The microstructure of an uvarovite sample was analyzed using SEM methods. Tiny quartz and chromite inclusions, calcite filling in microfractures and grossularite that forms a solid solution with uvarovite were discovered in the sample. This demonstrates that the uvarovite of eastern Tibet is of skarn origin. The spectral characteristics of the uvarovite were investigated using UV-VIS absorption spectrometry.

采用扫描电镜观察钙铬榴石样品的显微结构并进行能谱分析，结果表明其内部含有颗粒很小的铬铁矿和石英包裹体，以及裂隙中充填的方解石和与钙铬榴石为类质同象连续关系的钙铝榴石，从而为该钙铬榴石的夕卡岩成因和产状提供了佐证。

The microstructure, properties and applications of high chromium cast iron with more than 30% chromium are summarized.

综述含铬量超过30%的高铬铸铁的组织、性能和应用情况，简述了超高铬铸铁的研究应用前景。

Organochromium compounds have many kinds of important activity in the living beings organism. The human body lacking the chromium will cause diabetes and other relevant diseases. Animal lacking chromium will lead to hyperirritability,immune function restrained,propagation function drop, and body quality drop etc.

有机铬化合物在生物机体中具有多种极其重要的活性功能，如果人体缺铬，将导致糖尿病和其他相关疾病；动物缺铬，则会导致对应激敏感、免疫功能受抑制、繁殖功能下降、以及胴体品质下降等。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。