needle ironstone是什么意思

用法例句

Catalytic decomposition products and kinetic rates of phenol by hydrogen peroxide with goethite and lepidocrocite;

针铁矿纤铁矿催化降解苯酚动力学速率及其反应产物研究

Removal of sulfate from aqueous solutions adsorbed on goethite;

针铁矿吸附水中硫酸根离子的试验研究

The absorption reaction of goethite and its precursors on arsenite and the impact of pre-processing methods;

针铁矿及其前体吸附亚砷酸根离子的反应及预处理方法的影响

Technical study on goethite process for treating iron cake;

针铁矿法处理铁渣的工艺研究

The zinc sulfate procuct is processed using phosphating process, jarosite process and goethite process to remove iron in it.

以炼铜烟灰制取硫酸锌产品，用磷酸盐法、黄钾铁矾法、针铁矿法对产品初步除铁，再用Ｈ２ Ｏ２ 氧化法对产品进行深度除铁，实验结果表明，采用针铁矿法，再配合Ｈ２ Ｏ２ 氧化法，除铁效果良好，酸浸液中铁含量可降至０－０１ ｇＬ 以下。

Compare to jarosite process, goethite process owns many advantages for the removeal of ferric or ferrous ions, such as large crystal, less valuable metal loss, filtration.

与湿法炼锌浸出溶液除铁方法——黄钾(钠)铁矾法相比,针铁矿法除铁具有除铁渣结晶体大,夹带有价金属少,容易过滤等优点,但针铁矿法除铁过程中必须加入针铁矿晶种,才能有效地除铁。

In this paper the properties of Chemical kinetics for reaction between goethite αFeOOH and chlorhydric acid HCI have been studied.

本文研究了针铁矿αFeOOH与盐酸反应的化学动力学特性,测定了它们的反应级数、速率常数、实验活化能和指(数)前因子。