Cobalt-manganese polymetallic oxide ore and seabed polymetallic sulfide combined metallization recovery method

Abstract

The invention discloses a combined metallization recovery method of cobalt-manganese polymetallic oxide ore and seabed polymetallic sulfide, comprising: crushing and grinding the cobalt-manganese polymetallic oxide ore and seabed polymetallic sulfide to a particle size of less than 0.25 mm, and Carry out drying treatment to obtain two kinds of fine ore with water content less than 20%; mix the two kinds of fine ore, add reducing agent and slagging agent to prepare mixed material, and then add a certain amount of water to the mixed material for agglomeration and drying to obtain dry pellets; the dried pellets are subjected to metallization reduction roasting, and the materials after reduction roasting are cooled to obtain cooled materials; the cooled materials are crushed and finely ground, and then magnetic separation or magnetic separation‑ The flotation combined method is used for separation to obtain polymetallic iron concentrate and manganese-rich slag. The invention not only can realize the combined and efficient recovery of valuable metals from cobalt-manganese polymetallic oxide ores and seabed polymetallic sulfides, but also has low energy consumption, low pollution, low cost, simple process flow and easy operation.

Description

technical field [0001] The invention relates to the technical field of non-ferrous metal metallurgy, in particular to a combined metallization recovery method of cobalt-manganese polymetallic oxide ore and seabed polymetallic sulfide. Background technique [0002] Cobalt-manganese polymetallic oxide ores generally refer to polymetallic complex oxide ores rich in cobalt, nickel, copper, manganese, iron and other valuable elements, which are divided into terrestrial polymetallic nodules, deep-sea polymetallic nodules and crusts. Deep-sea polymetallic nodules and crusts are widely distributed in the surface layer of the ocean floor at a depth of 2000-6000m in the Pacific Ocean, the Atlantic Ocean and the Indian Ocean, and are abundant in reserves. Seabed polymetallic sulfides are one of the important metal mineral resources in the deep sea. They are mainly composed of iron and sulfur, and are also rich in copper, lead, zinc and other metals. Polymetallic sulphide mineral resou...

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Problems solved by technology

The pyrotechnic process is mainly based on the smelting process. The smelting process needs to reduce and smelt the deep-sea polymetallic nodules at high temperature (above the melting point temperature of the material), so that the valuable components cobalt, copper, nickel, etc. form alloys. In this process, copper, cobalt The recovery rate of nickel and nickel is high, which can reach about 98% respectively, but its temperature is high, energy consumption is high, pollution is heavy, the alloy is difficult to break, and the subsequent treatment process is complicated

[0004] Depending on the composition and structure of seabed polymetallic sulfides, most of them are processed first by mineral processing, and the separated concentrate and tailings are recovered separately through different metallurgical processes. Difficulty in smelting and other problems

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