Hydrometallurgical plant of nickel laterite ore and operation method thereof

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.