arsenic oxide

Single calcium carbonate or single calcium oxide reacts with arsenic compounds under high temperature and generates calcium arsenic which is hard to discompose. By adding a small amount of these substances, their arsenic-capturing rates are up to 73.0% and 47.4% respectively.

单一的碳酸钙或氧化钙在高温下与砷化物作用，生成难分解的砷酸钙，加入少量这些物质，其固砷率分别可达73.0%、47.4%。

A framework of parallel or latticed bars for blocking an opening. Application of Large Automatic Frame Filter Press in Arsenic Oxide Production Process and Its Improvement

炉格栅；筛滤栅由平行或交叉的横木构成的框架，用于封住一个口子大型全自动板框式压滤机在氧化砷工艺中的应用与改进

Remarks: 1. The test of arsenic 、 burning residua 、 oxide are items of formal tests.

注: 1、砷、灼烧残渣、氧化物的测定为形式检验项目.

The experiments included both small and extended test. Because the Arsenic in secondary zinc oxide exists mainly in the form of arsenous oxide, which is volatile, the roasting method of adding reductant carbon to secondary zinc oxide is used to remove Arsenic.

本研究实验包括小型实验和扩大实验，由于次氧化锌中砷主要以三氧化二砷形态存在，因此可以通过三氧化二砷易挥发特性，采用在次氧化锌中加入炭还原剂的焙烧方法脱砷。

The paper describes the application and renovation of the large automatic frame filter press imported from Japan during the arsenic oxide production, and the progress made through renovation in terms of reduction of shutdown time and improvement of working conditions.

本文论述了从日本进口的大型全自动板框式压滤机在氧化砷工艺中的应用与改进，以及通过改进在降低故障率、改善操作环境方面所取得的进步。

Application of Large Automatic Frame Filter Press in Arsenic Oxide Production Process and Its Improvement

大型全自动板框式压滤机在氧化砷工艺中的应用与改进