The leaching operation should achieve both the highest possible leaching rate and the solution suitable for the next step. The leaching operation can be carried out intermittently or continuously. The latter is used in industrial production to facilitate automation and increase the productivity of the leaching process. Intermittent leaching is more suitable for small and variable materials enterprises, but industrially, the use of Figure 1 and Figure 2 shows the process flow for intermittent leaching and continuous leaching, respectively. Figure 1 Intermittent leaching process flow chart FIG 2 former USSR a plant for wet antimony leaching process Figures 3 and 4 are continuous leaching tank of 11,000 t antimony wet plants and the former USSR a plant wet antimony used, depending on the scale of production capacity per cell, respectively 7.7m 3 and 10 ~ 20m 3. Figure 3 China's continuous leaching tank 1-mixing drive; 2,4-bracket; 3-stirring device; 5-cover; 6-slot; 7-angle steel frame; 8-snake tube; 9-small hole cover Figure 4 Continuous leaching tank of the former Soviet Union 1-tank; 2-slot cover; 3-feed tube; 4-bearing body; 5-transmission device; 6-large hole cover; 7-insulation layer; 8-liner; 9-steam jacket; 10-air riser; 11-mixer Intermittent leaching example: China's semi-industrial test flotation concentrate contains Sb 48% ~ 55%, of which oxide material accounts for about 12.7%, leaching agent is the mother liquid after crystallization of cathode waste liquid, containing Na 2 S is 120 ~ 140g ∕L NaOH 20～28g∕L, Sb15～17.5g∕L, slag (volume) solid (mass) ratio is 3:5～5:1, 锑 leaching rate can reach 99.6%～99.8%, arsenic leaching rate is 40%～ 45%, the slag contains 锑0.3% to 0.4%, and the slag rate is 22% to 35%. Catholyte is prepared from leachate and washing water. Its main components are: Sb93～100g∕L, As 0.25～0.38g∕L, Na 2 S 20g∕L, NaOH 116～125g∕L, Na 2 SO 4 26～31g ∕L, Na 2 CO 3 60-77 g ∕L, Na 2 SO 3 4-8 g ∕L, Na 2 S 2 O 3 39-60 g ∕L. Example of continuous leaching: The raw materials used in a former Soviet factory are flotation sulphide concentrate and oxide materials. The leaching agent is an electrolytic waste liquid containing Na 2 S 90-100 g/L, NaOH 25-35 g ∕L and Sb 20-30 g ∕L. . The leaching tank is heated by a steam jacket. In order to strengthen the process, a tube heater is provided, and the leaching and electrolysis are closed loops, so the concentration of the sodium sulfide solution used for leaching must be high, but the concentration of sodium sulfide in the electrolyte must be as low as possible. The most favorable concentration should be selected according to the form of the raw materials to be processed, the solvent and the cost of electrolysis. The leaching solution containing strontium 70-80g ∕L can be obtained by leaching with electrolytic waste liquid containing ～25～35g∕L, and the composition can also meet the requirements of electrolysis. The leaching rate of flotation concentrate 98 is 98%～99%. The slag contains 锑1.3% to 1.7%. Jin Yuankang company has developed an automatic model with the drawing effect of ABS plastic coating structure of surface treatment technology, the traditional drawing process are carried out on metal material, manual operation, in the process there will be dust hazards, and the product quality is stable, the line can not keep the waste of manpower, material resources. Brushed Process,Excellent Brushed Process,Brushed Sheet Metal Process Jin Yuan Kang Industry Co., Ltd. , http://www.jykplating.com
The company is drawing wire drawing on the surface of the plastic coating, the surface effect can replace the metal texture, but also the use of machinery instead of manual operation, reducing dust and other hazards%. Drawing products do not have too strong reflection, will not stimulate the eyes.
(2) good safety performance for automotive parts;
(3) the wire rope can be adjusted to the thickness, and grain;
(4) wire drawing has a strong metal texture;