CounterweightThe 3 preparation processes are as follows:

1. Using iron sludge as raw material to prepare counterweight ore pigment: Using industrial waste iron sludge as raw material, the counterweight ore red pigment is prepared by the acid oxidation method, and the resulting product meets the requirements of coatings and coatings for counterweight ore red pigment. Iron mud can also be used as a raw material, sulfuric acid is added as an oxidant, and then calcined in a muffle furnace to obtain a counterweight red pigment. These two methods are used to study the process route of preparing counterweight red from industrial waste slag iron mud, which eliminates the pollution of iron mud to the environment and turns waste into treasure, which has certain practical feasibility.

2. Use titanium white by-product ferrous sulfate to prepare counterweight pigment: heat a certain amount of titanium white by-product ferrous sulfate to 500 degrees Celsius, keep it for 2h, take it out and grind after cooling to make the particle size reach the range of counterweight red Heat to 800 degrees Celsius, keep for 2 hours, and fully calcinate to obtain the weight ore red.

3. Weighted mineral yellow pigment is an important variety in its series. The yellow pigment has high purity, uniform particle size, and easy to control particle size, so its hue is good and non-toxic, and its application range is expanding. The existing preparation methods include acid method (including iron flake method and drip method), alkali method, oxidation method (including air oxidation method, sodium chlorate oxidation method and hydroxy iron oxidation method) and peptization method. In recent years, new results have been achieved in the preparation process of counterweight mineral yellow, and some new processes have been developed.

   Take FeSO4 as raw material, add dispersant and surfactant, pass in nitrogen protection, and then pass in air to oxidize, to prepare a transparent weight mineral pigment with uniform particle composition, good crystallization, and spindle shape, avoiding the mercerizing effect. Performance reaches the standard of my country's chemical industry. The improved air oxidation method has simple process, low production cost and good development prospects.

   The above is the introduction of 3 preparation processes of counterweight ore, thanks for reading.