Methods and systems for preparing ore for precious metal extraction is provided. For example, a method comprises crushing ore; grinding the crushed ore; screening the ground ore to separate ore particles into a first group of large ore particles and a first group of small ore particles; crushing the first group of large ore particles; screening the crushed ore to separate into a second group of large ore particles and a second group of small ore particles; separating the second group of small ore particles from the screen into a third group of large particles and a third group of small particles; milling the third group of large ore particles; separating milled particles into a fourth group of large particles and a fourth group of small particles; and sending the third and fourth group of small particles for further metal extraction processing.

Methods and systems for preparing ore for precious metal extraction is provided. For example, a method comprises crushing ore; grinding the crushed ore; screening the ground ore to separate ore particles into a first group of large ore particles and a first group of small ore particles; crushing the first group of large ore particles; screening the crushed ore to separate into a second group of large ore particles and a second group of small ore particles; separating the second group of small ore particles from the screen into a third group of large particles and a third group of small particles; milling the third group of large ore particles; separating milled particles into a fourth group of large particles and a fourth group of small particles; and sending the third and fourth group of small particles for further metal extraction processing.

The present disclosure provides a hierarchical separating and grading method of coal gangue, and belongs to the technical field of coal gangue treatment and resource utilization. According to differences in the composition and properties of coal gangue, especially differences in Hardgrove grindability index (HGI), the present disclosure performs hierarchical crushing and screening to separate coal gangue into coal, sand, stone and soil. The coal can be used as a fuel for a coal gangue power plant or as an ordinary fuel. The sand and stone can be used to prepare manufactured sand and stone. The soil can replace loess for filling or preparing a building material. Obviously, by separating coal gangue into different components through hierarchical separating and grading, the present disclosure can achieve all-components utilization and effective reduction of the coal gangue.

The present disclosure provides a hierarchical separating and grading method of coal gangue, and belongs to the technical field of coal gangue treatment and resource utilization. According to differences in the composition and properties of coal gangue, especially differences in Hardgrove grindability index (HGI), the present disclosure performs hierarchical crushing and screening to separate coal gangue into coal, sand, stone and soil. The coal can be used as a fuel for a coal gangue power plant or as an ordinary fuel. The sand and stone can be used to prepare manufactured sand and stone. The soil can replace loess for filling or preparing a building material. Obviously, by separating coal gangue into different components through hierarchical separating and grading, the present disclosure can achieve all-components utilization and effective reduction of the coal gangue.

A process and system for producing an engineered fuel product that meets customer specifications for composition and combustion characteristics is provided. The engineered fuel product is preferably a high-BTU, alternative fuel that burns cleaner than coal or petroleum coke (petcoke) and has significantly reduced NOx, SO.sub.2 and GHG emissions.

A process and system for producing an engineered fuel product that meets customer specifications for composition and combustion characteristics is provided. The engineered fuel product is preferably a high-BTU, alternative fuel that burns cleaner than coal or petroleum coke (petcoke) and has significantly reduced NOx, SO.sub.2 and GHG emissions.

The present disclosure relates to a system (100) for extracting electrode material from batteries. A shredding unit (104) configured to receive the cooled feedstock from the freezing unit (102). The shredding unit (104) is configured to shred the feedstock into powder form. A cyclone separator (110) configured with the shredding unit (104), and configured to receive air bone electrode material particles generated as a result of shredding the batteries. A separating unit (106) configured with the shredding unit (104), and configured to separate the electrode material particles. A cleaning unit (108) operatively configured with the separating unit and the cyclone separator (110). The cleaning unit (108) is configured to receive the powdered electrode particles from the shredding unit 104), and powdered electrode materials from a first output of the cyclone separator (110). A mixing agitator (110) is configured to receive the powdered electrode material from the cleaning unit (108).

A modular nut cleaning plant comprises a nut sizer and a stick remover mounted to the nut sizer. A vacuum unit is mounted to the stick remover. A nut product stream will pass on the stick remover through the vacuum unit which will vacuum light debris from the nut product stream. The nut product stream moves on a chain on the stick remover. Large debris and sticks that do not fall through openings in the chain will pass into a debris conveyor. Nuts and debris that fall through the openings in the chain will be delivered to the nut sizer. The nut sizer will rotate and tumble nuts and debris in the nut product stream. Nuts of an undesirable size and debris will pass into a debris conveyor. Nuts of a desired size will pass through the nut sizer into a chute or other conveyance to be delivered to further nut processing apparatus.

A modular nut cleaning plant comprises a nut sizer and a stick remover mounted to the nut sizer. A vacuum unit is mounted to the stick remover. A nut product stream will pass on the stick remover through the vacuum unit which will vacuum light debris from the nut product stream. The nut product stream moves on a chain on the stick remover. Large debris and sticks that do not fall through openings in the chain will pass into a debris conveyor. Nuts and debris that fall through the openings in the chain will be delivered to the nut sizer. The nut sizer will rotate and tumble nuts and debris in the nut product stream. Nuts of an undesirable size and debris will pass into a debris conveyor. Nuts of a desired size will pass through the nut sizer into a chute or other conveyance to be delivered to further nut processing apparatus.

A system and method for separating granular particles according to particle size, and more particularly enhance ore grades by removing unwanted material. The system (10) comprises means (11) for transporting granular material (12) comprising multiple sized fractions with gradation of the particles according to particle size between relatively fine fractions and relatively coarse fractions, in a direction having a horizontal component; and subjecting the granular material (12) to vibration while being so transported to induce some separation of particles according to particle size. The system (10) further comprises means (13) for causing the granular material (12) to subsequently move as a granular flow (14) along a curved path (15) under the influence of gravity to further induce separation of particles according to particle size. The system (10) still further comprises means (16) for dividing the granular flow (14) moving along the curved path (15) into different streams (17) according to their trajectory.