Hydrometallurgical plant of nickel laterite ore and operation method thereof

摘要

A hydrometallurgical plant for nickel laterite ore extraction having a plurality of treatment facility lines wherein the plant is capable of minimizing a decrease in throughput when line failure occurs and efficiently restoring normal operation status Each line of the treatment facility includes a pretreatment step, a leaching step, a solid-liquid separation step, a neutralization step, a zinc removal step, a sulfurization step and a detoxification step. The lines are coupled by pipelines, each having a valve, installed after the solid-liquid separation step for sending a liquid from the solid-liquid separation step to the neutralization step in each line and/or after the sulfurization step for sending a liquid from the sulfurization step to the detoxification step in each line.

主权项

1. A hydrometallurgical plant of a nickel laterite ore comprising;
two or more lines of a series of treatment facilities, wherein the treatment facilities consist of a pretreatment step, a leaching step, a solid-liquid separation step, a neutralization step, a zinc removal step, a sulfurization step and a detoxification step, and wherein the lines are coupled by installing a first coupling pipeline having a first valve positioned after the solid-liquid separation step in the lines and a second coupling pipeline having a second valve positioned after the sulfurization step in the lines; wherein the first coupling pipeline transfers a liquid from the solid-liquid separation step to the neutralization step between each line and the second coupling pipeline transfers a liquid from the sulfurization step to the detoxification step between each line wherein the transfer from the solid-liquid separation step to the neutralization step consists only of the liquid from the solid-liquid separation step, and wherein the transfer from the sulfurization step to the detoxification step consists only of the liquid from the sulfurization step.