Yellow peel treatment process and yellow peel treatment equipment for quartz mine or alkalifeldspar mine

Abstract

The invention discloses a yellow peel treatment process and yellow peel treatment equipment for quartz mine or alkalifeldspar mine. The yellow peel treatment process comprises the following steps: crushing the quartz mine or the alkalifeldspar mine into mineral particles with particle sizes of 10-20mm, feeding the mineral particles in a drying barrel of a rotary kiln and heating the mineral particles to 150-210 DEG C, then transferring the mineral particles into a soaking cleaning kettle and soaking the mineral particles with hydrochloric acid for 8 hours, then draining hydrochloric acid, transferring the quartz mineral particles or the alkalifeldspar mineral particles in a cleaning phase, and cleaning the mineral particles in a mist-spraying manner through clear water after neutralization pressure-filtration; and unloading while cleaning the mineral particles until the pH value of water is 6.0-6.5, and drying the obtained mineral particles through the drying barrel of the rotary kiln to obtain a finished product. According to the yellow peel treatment process and the yellow peel treatment equipment, which are disclosed by the invention, the quartz mine or the alkalifeldspar mine is soaked and cleaned through a kettle body integrating a soaking function and a cleaning function, heated by virtue of hot air, and soaked through adopting a mist-spraying cleaning method instead of a cleaning pool, thus equipment investment is reduced, repeated use of acid is benefited, cleaning water consumption is reduced, yellow peel removal efficiency is increased, and the yellow peel treatment process and the yellow peel treatment equipment are suitable for large-scale production.

Description

technical field [0001] The invention relates to a process and equipment for treating yellow skin of quartz ore or potassium sodium ore. [0002] technical background [0003] At present, the yellow skin treatment of quartz ore ore is basically that the quartz ore ore is soaked in hydrochloric acid after crushing, and the hydrochloric acid is drained after soaking, and the quartz ore ore is transported to the cleaning tank. Add water to soak and wash repeatedly, and dry the qualified quartz ore or potash sodite ore to obtain the product. There are following problems in this technique: [0004] 1. Large investment in equipment: [0005] This process requires the construction of a series of cleaning pools. Because the soaked quartz ore or potassium soda ore contains strong acid, it requires high acid resistance for transport and transportation equipment; [0006] 2. Generate acid mist and pollute the environment: [0007] Hydrochloric acid is volatile, and the acid mist gene...

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Problems solved by technology

[0006] 2. Generate acid mist and pollute the environment:

[0007] Hydrochloric acid is volatile, and the acid mist generated during unloading and transshipment is not easy to deal with, and even more harmful to human health;

[0008] 3. High water consumption for cleaning:

[0009] After soaking, some strong acids and salts penetrate into the quartz ore or potassium sodium ore. To release these strong acids and salts from the mine requires repeated soaking and cleaning, which not only consumes a lot of water, but also makes it difficult to discharge no waste water. ;

[0010] 4. The effect of yellow skin treatment is not good

[0011] The current quartz ore or potassium sodium ore is basically cold soaked in the strong acid soaking process, the treatment effect of the yellow skin is poor, and the whiteness is low

Although some production plants use thermal soaking and use steam as a heat source, it will cause a large amount of tail gas during soaking, which will increase the difficulty of tail gas treatment; the liquid level will rise during the soaking process, and the acid concentration will gradually decrease, which is unfavorable for the repeated use of acid. The removal effect of yellow skin is poor, and the amount of acid is large, which increases the difficulty of wastewater treatment

At the same time, it is necessary to add boilers and other equipment

[0012] 5. High operating costs

[0013] Due to improper workmanship and various equipment, the operating cost is high

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