The impact of ball mill steel ball material on mineral processing production

The steel balls themselves are also worn by the ore during the grinding process, and are ground into iron powder or iron flakes and remain in the slurry. Although this amount is not large, according to my country's current level, grinding one ton of mineral balls consumes about 1.5kg, but it will have an impact on subsequent operations.
If the next step of the grinding product is a chemical process of acid treatment, the iron powder in the grinding product will first consume sulfuric acid. Increase acid consumption. For this reason, pebble mills are often used in some uranium or gold mines in South Africa and North America to reduce the impact of iron on subsequent wet chemical processes. In the laboratory, magnetic ball grinding is used to reduce the impact of iron on the product. These are already common knowledge among mineral processing engineering and technical personnel.
The impact of iron in grinding on mineral processing is often ignored. Many studies in recent years have shown that the iron powder worn away during grinding is rapidly oxidized and consumes the oxygen in the slurry. It also causes changes in the surface potential of the slurry and minerals, thereby affecting the flotation behavior. Some studies have pointed out that during wet grinding, the electrochemical interaction between the mineral and the steel ball causes the wear and tear to inhibit the natural flotability of the mineral, and more collectors are consumed during flotation.
Under grinding and non-grinding conditions, the current effect generated by the two-electrode or three-electrode combination between the mineral and the grinding medium is closely related to the floatability of the mineral. When not ground, the electrochemical action creates an iron hydroxide coating that reduces the mineral's floatability. Under grinding conditions, the interaction between the metal fragments produced by the grinding medium and the minerals plays a major role in the inhibition of ground minerals, and this effect is particularly significant for pyrrhotite.
When the grinding medium is in contact with the sulfide ore, a Galvanic current is formed, and an oxidation-reduction reaction occurs due to the difference in open circuit potential between the grinding medium and the sulfide ore. This Galvanic reaction can be controlled by the mixed potential principle, where the material with a lower open circuit potential acts as an anode and is subject to surface oxidation, so the selectivity of sulfide ore sorting may be increased or decreased. The mechanical-chemical reaction of sulfide ore will reduce the selectivity of sorting. Finally, it is pointed out that the selectivity of sulfide sorting can be achieved by selecting appropriate grinding media and conditions. In order to reduce the impact of the iron quality of the steel balls on the mineral processing process, most scientific researchers choose corrosion-resistant materials to make grinding balls.The impact of ball mill steel ball material on mineral processing production
The steel balls themselves are also worn by the ore during the grinding process, and are ground into iron powder or iron flakes and remain in the slurry. Although this amount is not large, according to my country's current level, grinding one ton of mineral balls consumes about 1.5kg, but it will have an impact on subsequent operations.
If the next step of the grinding product is a chemical process of acid treatment, the iron powder in the grinding product will first consume sulfuric acid. Increase acid consumption. For this reason, pebble mills are often used in some uranium or gold mines in South Africa and North America to reduce the impact of iron on subsequent wet chemical processes. In the laboratory, magnetic ball grinding is used to reduce the impact of iron on the product. These are already common knowledge among mineral processing engineering and technical personnel.
The impact of iron in grinding on mineral processing is often ignored. Many studies in recent years have shown that the iron powder worn away during grinding is rapidly oxidized and consumes the oxygen in the slurry. It also causes changes in the surface potential of the slurry and minerals, thereby affecting the flotation behavior. Some studies have pointed out that during wet grinding, the electrochemical interaction between the mineral and the steel ball causes the wear and tear to inhibit the natural flotability of the mineral, and more collectors are consumed during flotation.
Under grinding and non-grinding conditions, the current effect generated by the two-electrode or three-electrode combination between the mineral and the grinding medium is closely related to the floatability of the mineral. When not ground, the electrochemical action creates an iron hydroxide coating that reduces the mineral's floatability. Under grinding conditions, the interaction between the metal fragments produced by the grinding medium and the minerals plays a major role in the inhibition of ground minerals, and this effect is particularly significant for pyrrhotite.
When the grinding medium is in contact with the sulfide ore, a Galvanic current is formed, and an oxidation-reduction reaction occurs due to the difference in open circuit potential between the grinding medium and the sulfide ore. This Galvanic reaction can be controlled by the mixed potential principle, where the material with a lower open circuit potential acts as an anode and is subject to surface oxidation, so the selectivity of sulfide ore sorting may be increased or decreased. The mechanical-chemical reaction of sulfide ore will reduce the selectivity of sorting. Finally, it is pointed out that the selectivity of sulfide sorting can be achieved by selecting appropriate grinding media and conditions. In order to reduce the impact of the iron quality of the steel balls on the mineral processing process, most scientific researchers choose corrosion-resistant materials to make grinding balls.