Discuss the chemical properties and harvesting capacity of xanthate
1 Stability:
The yellow medicine is easily decomposed by water, acid and heat, that is, it is greatly affected by pH and temperature, so the yellow medicine is extremely unstable.
After decomposition, the ability to capture is lost, so xanthate is often used in alkaline pulp. Decomposition rate in an acidic environment: low-grade xanthate > advanced xanthate, so when used in an acidic medium, try to use advanced xanthate.
2 Oxidizing properties:
Xanthate itself is a reducing agent and is easily oxidized. When O2 and CO2 are present simultaneously, the oxidation rate is faster than when only O2 is present. Xanthate is oxidized to form a double xanthate
Xanthate in aqueous solution, if certain metal cations, then they will be oxidized xanthate xanthate pairs.
Yellow drug harvesting performance :
1 The ability to affect the recovery of xanthate is the length and heterogeneity of the hydrocarbon chain of the non-polar group in the xanthate molecule. The excessive length of the hydrocarbon chain will reduce the ability of the xanthate to collect, and the number of carbon atoms is usually 2 to 5. The number of short hydrocarbon chain xanthates in the range of 2 to 5, the normal body has no strong isomers for collection. The number is >5 long hydrocarbon chain xanthates, and the isomers are not strong in the normal form.
2 The pro-solid atom of xanthate is sulfur, which can capture metal sulfide minerals. Xanthate has no catching effect on gangue minerals in sulfide ore. The xanthogenate formed by the reaction of xanthate with alkaline earth metal ions is easily soluble in water.
Left-hand full-thread bolt
Left-handed full-thread bolts are mainly used in mines where rock formations such as coal mines are not hard enough. bolts are generally used together with anchoring agents to achieve end anchoring or full anchoring in mines.
ANTO left-handed full-thread bolt is made of high-strength HRB500 or HRB600, which can provide high load-bearing capacity to protect mine safety.
Compared with other bolts, it can be installed using ordinary foreign drilling rigs, which saves installation costs.
Anto left-handed full-threaded anchor rod, the threads are distributed throughout the rod body, increasing the moving length of the nut, if the anchor rod support is loose in the later stage, tighten the nut, and the anchor rod restores the support force.
The one-way left-handed rebar bolt without longitudinal reinforcement can be used in all kinds of mines and underground projects, and is especially suitable for the support of coal tunnels with wire mesh. It has achieved good technical and economic effects.
The structural features of the anchor rod: the full length of the body has a rolled continuous thread, and the full length is of equal strength; the fastening end is provided with a prestressed gasket and a ball nut. It is superior to the bolt processed by round steel, and is a new type of bolt with material saving, labor saving and equal strength.
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