查询词典 witherite

Through the analysis of present status and existing problems of barium hydroxide production,the four measures for the production of barium hydroxide from witherite by hydrolysis method are put forward.

通过中国现有氢氧化钡生产现状及存在问题分析，对采用毒重石水解法生产氢氧化钡工艺提出了4项措施：增加毒重石矿选矿工艺，寻找新的毒重石矿源以提高品位，长时间研究确定生产工艺，开发氢氧化钡新的生产工艺线路。

Our products mainly consist of following: barium hydroxide, barium chloride, witherite powder and ore, With annual output total amount of 80,000mt. We are one of the biggest company who acts as manufacturer and distributor of barium salt in China . Enjoying self import and export right.

以中国重庆巴山丰富的钡矿资源为基础建立的钡盐加工贸易型企业，主要生产和销售氢氧化钡、氯化钡及毒重石矿石、矿粉等钡盐系列产品，各类产品年产量总计8万余吨，是国内最大的钡盐生产企业之一。

In addition, the former under Sinian Bikou Sinian subgroups and the subgroups Bikou metallogenic belt in the wider region, there is uranium, manganese, iron, cobalt, sulfur, nickel, coal, phosphate, crystal stone, Iceland spar, witherite, marble, limestone and so on, the development of industrial raw materials, excellent conditions for the processing industry.

此外，在前震旦系碧口下亚群和震旦系碧口上亚群成矿带广大区域内，有铀、锰、铁、钴、硫、镍、煤、磷、水晶石、冰洲石、毒重石、大理石、石灰石等，发展原料工业、加工工业条件优越。

The reaction mechanism and macro - kinetics of decomposition of witherite with nitric acid are also studied.

结果表明：硝酸分解毒重石的反应过程是典型的氢离子通过液膜的传质控制的反应过程。

Also known as "Rock" or "witherite years."

也叫"望夫石"或"重石里"。

But if the temperature is above 1300℃, the witherite will bond , so this way can't be used in practical production.

因此这种方法无法应用在实际生产中。

Through a lot of experiments , this paper deemed that if the witherite is roasted under 1350℃ by adding 10 percent of coke powder, and the reducing atmosphere is held at the same time, the result of the experiment will be best.

通过大量的实验研究，本论文发现如果在毒重石中添加10%的焦粉，然后在1350℃下进行焙烧，同时保持还原性气氛，则将取得最好的实验效果。

The macro-kinetics characteristics of decomposition of witherite with nitric acid in a batch reactor are studied.

研究了在间歇反应器中，用硝酸分解毒重石宏观动力学特性。

The influences of the partical size of witherite, the initial concentration of nitric acid, the stirring speed, the reaction time and temperature on the decomposition rate of witherite are discussed.

分别对毒重石粒度、硝酸初始浓度、搅拌强度、反应时间、反应温度对毒重石分解率的影响进行讨论，并研究了硝酸分解毒重石反应过程机理及宏观动力学。

For settling this problem, this paper studyed the decomposition of the witherite mineral under high temperature, and discussed the possibility of roasting the witherite by rotary kiln.

通过理论分析和实验研究，本论文发现，若不在毒重石中添加任何物质而直接焙烧，则毒重石开始分解的温度为1200℃，而大量分解则需1400℃的高温。

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。