Talking about the beneficiation technology of copper mine

Copper sulfide ore pyrite symbiotic often, both have good electrical conductivity and floatability. Ge Baoliang et al. discuss the floatability of chalcopyrite and pyrite and its flotation separation method from the aspects of ore structure, semiconducting properties and electrochemistry. Sulfur Nitrogen No. 9 is used as a collector . At pH=11, The thermodynamic potential of flotation of two minerals is quite different, and it is expected to achieve flotation separation. Self-induced flotation and sulfur-induced flotation can overcome the non-selective adsorption of collector flotation, which is a promising method for separation of copper and sulfur. The Guangxi Rongxian copper mine uses a combination of humic acid and lime to inhibit pyrite. When the copper recovery rate is similar to that of lime alone, the copper concentrate grade is increased from 14% to 18%.

Shi Daomin and other copper mines in the Tongshan copper mine of Daye, using a coarse two-sweep mixed flotation, mixed with alkaline pulp (Ding Huang Yao: Ethyl sulfide = 4:1) to obtain coarse concentrate, and then fine Grinding 96% -200 mesh, the copper and sulfur are fully dissociated, and the sulfur concentrate with sulfur content of 35.95% is obtained, and the low-grade pyrite is comprehensively recovered. Alvarez et al. studied the surface tension of minerals with methanol and studied the flotation separation of a chalcopyrite and pyrite. It was found that a volume fraction of 1% methanol and a small amount of S-701 collector were added to the slurry. With satisfactory results, this process can replace the conventional method of inhibiting pyrite by lime. At the same time, the use of methanol is advantageous for fine flotation, which provides another flotation process for muddy and over-pulverized chalcopyrite.

(2) Copper sulfide molybdenum ore

Nitrogen instead of air medium separation Copper molybdenum is widely used in the world copper and molybdenum plant. Nitrogen can prevent the oxidation of chemicals, especially Na2S, thus reducing the amount of Na2S. The Canadian Gibraltar Copper and Molybdenum Plant uses nitrogen medium to eliminate steaming. To reduce the amount of Na2S from 8kg/t to 2kg/t. Russia used non-polar collector HNOTPNH-3 instead of spindle oil to treat copper-molybdenum ore. As a result, the recovery rate of copper and molybdenum increased by 1% and 0.5%, respectively.

U.S. Patent describes a more complex secondary phosphate and a thio-bis xanthate acetate mixture, copper-molybdenum can increase the separation effect. Also introduced a copper-molybdenum ore preferential copper flotation process, adding sulfite ion and caustic starch to adjust the pH value of 5.2 ~ 6.2, after adding slurry to add alkyl dithio phosphite float copper, copper tailings plus coal oil is selected from molybdenum.

The research and application of organic inhibitors has also achieved great progress. Common low-molecular organic inhibitor consisting of alkanes (short chain), affinity group and a hydrophilic group composed of a solid, such as thioglycolic acid (sodium), mercaptoethanol, thio-uracil tetramethyl pilips oil and introduced to the Austrian side (ORFOM ) D series products for commercial brands. Due to the high price of such agents, large-scale industrial applications are still difficult.

(3) Copper sulfide nickel ore

Canada International Nickel's copper sulphur uses diphenyl hydrazine as a collector for chalcopyrite, and dextrin is used as an inhibitor of pentlandite for preferential flotation, which greatly improves selectivity. Nickel removal rate is less than that under the same conditions. The dextrin blank test was 50% higher.

Russia's Northern Nickel Company successfully applied electrochemical methods to treat high-ice nickel slurry, thereby improving the selectivity of copper-nickel flotation separation. Industrial test results show that the electrochemical treatment method can increase the production efficiency by 15% to 20%, and also reduce the nickel content of the copper concentrate and the copper content in the nickel concentrate.

Welded Seamless Steel Pipe

welded Seamless Steel Pipe

Packaging & Shipping

Package	1)bundle with strip
	2)PVC package
	3)woven bags
	4)water-proof sheeting
	5)clients' Requirements
Port of Shipment	Tianjin Port of China
Delivery time	7-20 days after receiving deposit

Product Description

Shape	Round pipe	Square pipe	Rectangular pipe
Outer diameter	17-1820mm	15*15-1000-1000mm	1020-1000800mm
Wallthickness	0.5-30mm	0.5-30mm	0.5-30mm
Length	4-15m or as customers' requirements and can be cutting as customer's requirements
Standard	GB/T3091-08,GB/T13793-92, GB/T6728-2002,GB/T19001-2008, ISO9001-2008 DIN2440, JIS-G3444, EN10255, ASTM A53
Steel Grade	Q195-Q345, S235JR, S275JR, S355JR, S355J2H, STK400/500.
Zinc coating	Pre-galvanized steel square tube: 30g/m2-150g/m2; Galvanized steel square tube:20g/m2-400g/m2 or as customer's requirements
Surface	hot dipped galvanized, Pre-gavanized, electro galvanized, painted, threaded, beveled, grooved, engraved
Usage	Scaffolding pipe, Structure pipe, Fence/Door pipe, Furniture, Lowpressure fluid pipe for water oil or gas, Boiler pipe.
Place of origin	Tianjin Port of China
Productivity	10000Tons/Month
Payment Terms	1) Payment term: T/T;L/C;D/P 2)Trade Terms: FOB/CFR/CIF 3)Minimum quantity of order : 5 Mt
Test	Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength Yield strength, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test. Third party inspection:SGS, BV, Lloyds etc.

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