| 七○砂石灰石中SiO_2、CaO、MgO的系统分析 |
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| 引用本文： | 张凤萍. 七○砂石灰石中SiO_2、CaO、MgO的系统分析[J]. 大型铸锻件, 2001, 0(4): 37-38 |
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| 作者姓名： | 张凤萍 |
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| 作者单位： | 太原重型机械集团公司, |
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| 摘 要： | 常见七○砂石灰石中的元素分析多来用碳酸钠与四硼酸钠混合熔剂进行分解试样,方法较繁锁,处理周期长。现介绍一种较简便准确的方法:试样直接用酸溶解,动物胶脱水,沉淀灼烧后测定SiO_2含量。MgO、CaO的成分含量用EDTA络合法测定。
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| 关 键 词： | 七○砂 成分分析 石灰石 |
| 修稿时间： | 2001-08-20 |
Systematic Analysis for SiO2, CaO and MgO in Limestone Casting Sand |
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| Zhang Fengping. Systematic Analysis for SiO2, CaO and MgO in Limestone Casting Sand[J]. Heavy Casting and Forging, 2001, 0(4): 37-38 |
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| Authors: | Zhang Fengping |
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| Affiliation: | Zhang Fengping |
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| Abstract: | Generally, the mixed solvent of sodium carbonate and sodium borate is used for decomposing the test sample to analysis the element of limestone casting sand, this method is very complicated, and the time for analysis is long. In this paper, a new simple and convenient method has been introduced, that is to say, the test sample is dissolved directly by acid, the solution is dehydrated by animal glue, then the precipitation is burned for measuring SiO2 content. MgO and CaO content are measured by EDTA complexing method. |
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| Keywords: | Composition Analysis Limestone and Casting Sand. |
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