GOLD9999®Gold dressing agent

Operation Instruction

1. Application Scope

    This product is suitable for containing gold and silver oxide ore, primary ore, gold concentrate, sulfuric acid slag, copper *** and zinc slag, *** tailings, anode mud, electronic materials, gravity separation flotation tailings and other materials containing gold and silver leaching, heap leaching, pool leaching, carbon slurry production process of leaching. This product and sodium *** production process is exactly the same, can be mixed use.

2. Shape and Solution

2.1 The product is powdery and grainy.

2.2 With the mixing bucket, ore pile backwater, over carbon place connecting one more opening, carbon bucket etc. flowing water ways to dissolve are the the fastest.

3. Alkalinity Adjustment

    With lime, sodium hydroxide (caustic soda) adjust PH value to 11.5, check often and adjust timely. PH value is too high, affecting carbon adsorption, too low will hydrolyze, increase dosage.

4. Calculation of Dosage

4.1 According to the grade of gold and silver materials and the harmful elements of leaching, the best dosage was determined by small test, may refer to sodium *** dosage, the theoretical dosage of Gold Solubilizing Agent is 0.2 - 0.8 kg / gram-ton ore (i. e., per gram gold of per ton ore, the higher the grade, the less Gold Solubilizing Agent dosage), the initial production concentration of Gold Solubilizing Agent may be higher, the normal production concentration is 0.2 - 0.7‰ (2-7 per 10,000). Determine the optimum concentration according to actual production.

4.2 When the concentration of Gold Solubilizing Agent is below the optimum value in normal production, calculate the supplement dosage according to the water quantity: supplement dosage = (optimum concentration − measured concentration)×production water quantity, If the optimum concentration is 0.7‰, the measured concentration is 0.2‰, the water quantity is 500 m3, and the supplement dosage = (0.7−0.2) × 500=250 kg.

5. Concentration Detection Method

5.1 Required instruments: burette stand 1，geiser burette 1, 10ml pipette 1, pipette bulb 1, red head dropper 1, 100ml Erlenmeyer flask 1, 200ml graduated cylinder 1, 500ml volumetric flask 1, 500ml brown bottle 2.

5.2 Reagent Preparati

5.2.1 Chromogenic agent: Dissolve the whole bottle of red reagent in 5-(4-Dimethylaminobenzylidene)rhodanine and dissolve it in 200ml ***, stored in a brown bottle stand by.

5.3 Operation Method

5.3.1 Use pipette to suck 10ml Gold Solubilizing Agent solution (pregnant solution or barren solution) into conical flask, drop in 5 drops of chromogenic agent and shake well, the solution is light yellow.

5.3.2 Use pipette to suck 10mI test agent (silver nitrate solution) and slowly drop into conical flask, drop while shake at the same time, stop continuing to drip in when the solution in the bottle becomes light red, take *** the number of test agent to be dropped, the amount of drops is the concentration of Gold Solubilizing Agent, if the amount of drops is 0.6 ml, Gold Solubilizing Agent solution concentration is 0.6‰(6 per 10,000), and so on.

5.4 The results of traditional sodium *** test are different, but they can be used as a method of dosing in production.

6. Others

6.1 This product is prohibited to store and transport with acid chemicals, food.

6.2 Complex ores may be referred to conventional methods of pretreatment, the use of *** nitrate, hydrogen peroxide solution, ammonia, sodium peroxide (potassium) as oxidant and inhibitor, is good for leaching of gold and silver, but excessive dosage will increase the amount of Gold Solubilizing Agent, increase the cost of production.

6.3 Gold Solubilizing Agent dissolves the gold and silver faster than the sodium ***, timely detect, timely adsorpt of dissolved gold and silver.

6.4 Gold Solubilizing Agent refers to the temperature required for the production of sodium ***.

6.5 After the dissolution of Gold Solubilizing Agent some water turns grey and remaining a small amount of undissolved substance does not affect the leaching.

6.6 Apricot shell charcoal, coconut shell charcoal, zinc powder and zinc wire all can be used as auxiliary collectors, gold special coconut shell charcoal adsorpts gold more thoroughly.