Treatment of mine blasting blind cannon and residual medicine

A blind cannon is a blasthole or drug chamber that is rejected due to a detonator bonfire. The difference between a residual drug and a blind cannon is the presence or absence of a detonator. If it is found that the blind cannon and the residual medicine should be disposed of in time and cannot be processed in time, it is necessary to immediately set up obvious signs and take corresponding measures.

The commonly used methods for treating residual guns include: re-explosion method, lure method, parallel eye charge blasting method, and water washing method. There is no detonator in the residual medicine, and it can be treated by the above method of treating the blind cannon. The residual medicine is often difficult to be found, and it is necessary to check carefully, and it is strictly forbidden to kill the eye. After the blind cannon is handled, it is necessary to carefully check the explosive pile and collect the residual blasting equipment. Precautionary measures should be taken before the explosion-proof blasting equipment is found.

Iron Oxide Yellow

The main component of Iron Oxide yellow is iron oxide, with the chemical formula Fe2O3 · H2O, which is a monohydrate of iron oxide.

A lemon yellow to brown powder. The relative density is 2.44 ~ 3.60. Melting point 350 ~ 400 ℃. Insoluble in water, alcohol and acid. The fine powder is a crystalline iron oxide hydrate. Due to the different production methods and operating conditions, the degree of hydration is different, and the crystal structure and physical properties are very different. Good coloring power, covering power, light resistance, acid resistance, alkali resistance and heat resistance. Crystal water is decomposed above 150 ℃, and most of it turns red above 400 ℃.

purpose

1. Iron oxide yellow pigment is directly mixed into cement as pigment or colorant in all kinds of concrete precast parts and building products. Various indoor and outdoor color concrete surfaces, such as wall, floor, ceiling, pillar, porch, pavement, parking lot, ladder, station, etc; Various building ceramics and glazed ceramics, such as face tiles, floor tiles, roof tiles, panels, terrazzo, mosaic tiles, artificial marble, etc.

2. Iron oxide yellow pigment is suitable for coloring and protective substances of various coatings, including waterborne interior and exterior wall coatings, powder coatings, etc; It can also be applied to oily paints, including oxygen, alkyd, amino and other primers and topcoats; It can also be used for toy paint, decorative paint, furniture paint, electrophoretic paint and enamel.

3. Iron oxide yellow pigment is suitable for coloring plastic products, such as thermosetting plastics and thermoplastics, and rubber products, such as automobile inner tubes, aircraft inner tubes, bicycle inner tubes, etc.

4. It is widely used for coloring artificial marble and terrazzo in construction industry. It is the pigment of watercolor, oil paint, paint, rubber, etc. It is used as an intermediate of iron oxide pigments, such as Iron Oxide Red, iron black, etc.

In addition, iron oxide yellow pigment can also be used for coloring all kinds of cosmetics, paper and leather.

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