After decomposing the sample by dry method, dissolve the residue with sulfuric acid and ammonium sulfate, and test it.
试样以干法分解，以硫酸，硫酸铵溶解残渣后进行测试。
Preliminary test indicates that most of sulfuric acid can be separated and recovered by diffusing dialysis process. Consequently, the alkali consumption is reduced in uranium precipitation process.
初步试验表明，扩散渗析可以用来分离回收其中大部分的硫酸，从而降低溶液的酸度，减少沉淀产品的碱耗。
The test of leaching rate on zinc sulfide concentrate in Shaanxi province with sulfuric acid, oxygen and catalyst has been taken.
用硫酸和氧气及催化剂对陕西某地的硫化锌精矿进行了浸出试验研究。
It describes the test and research on recovering silver from silver bearing residue by using sulfuric acid leaching ammonia leaching process, which is simple and worthy of promotion.
介绍了银渣回收银的试验研究情况，采用硫酸浸出-氨浸法处理银渣，工艺简单合理，技术指标高，有一定的推广价值。
On the basis of improving the traditional sulfuric acid method, a measurement was explored to test the content of cellulose in municipal refuse.
对传统硫酸法进行改进，建立适用于城市生活垃圾纤维素含量的测定方法。
On the basis of improving the traditional sulfuric acid method, a measurement was explored to test the content of cellulose in municipal refuse.
对传统硫酸法进行改进，建立适用于城市生活垃圾纤维素含量的测定方法。
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