2003•Yunnan MetallurgyRequires access

Study on Kinetics of Ammonia Leaching of Refractory Zinc Oxide Ore in Lanping

Yaochun Yao

Abstract

Based on the characteristics of oxide zinc ore in Lanping,the kinetics of ammonia leaching of oxide zinc ore is studied.The study involves the mechanism of ammonia leaching and the influence of concentration and temperature of ammonia water,and the grain size of ore on the leaching process.The results showed the ammonia leaching of zinc oxide ore belongs toun-reactive atrophic nuclearmodel free from solid product layer.The kinetic equation is:1-(1-α)1/3=k ct/ρr0.The leaching process is boundary layer controlled;the leaching rate and leaching recovery can be increased by means of increasing the concentration of ammonia solution and decreasing the grain-size of ore.

About this research paper

What this paper is about

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Leaching (pedology), Lixiviant, Ammonia, Zinc, Chemistry, Kinetics, Oxide, Metallurgy