Qızıl emalı zavodlarında natrium siyanidin azaldılması üçün məsləhətlər

At preseNt, most Qızıl emalı plants use Natrium siyanid kimi Qızıl çıxarılması chemical. The qızılın siyanidləşməsi method is welcomed by MAny qızıl mədəni owners all over the world because of its simple process and high bərpa dərəcəsi.

1. Strengthen the Inflation and Improve the Oxygen SUPply Quality

Increasing aeration and increasing oxygen supply can reduce unnecessary istehlak of liquid siyanür. At present, most Qızıl Sianidləşdirmə Zavodus use low pressure (0.2mpa) oil-free air compressor for air supply, and the air supply volume is between 0.5-1.0m3/min tank. In order to improve the quality of the air supply, you set a small hole hood at the end of the air supply pipe to generate a large number of small diameter bubbles, or install a check valve to prevent backwardation.

2. Strictly Control the Mis Grade of Raw Ore

mis consumes a large proportion of siyanür ci yuyulma prosesi. Məsələn, a Qızılın siyanidləşməsi plant has a copper grade of 0.548% in raw ore, and the mother liquor of the first Yuyucu 11 ehtiva edir61mg/L copper, which consumes 37.6% of the annual Siyanür istehlakı. Due to the high copper content of the dissolving solution, in order to maintain the Qızılın yuyulması activity of the solution, the Natrium siyanür məhluldakı konsentrasiyası müvafiq olaraq artırılmalıdır ki, bu da istehlakı daha da artırır natrium siyanid. Therefore, controlling the copper content of the raw ore can not only reduce the Natrium siyanid consumed by dissolving copper, but also greatly reduce the Natrium siyanidin konsentrasiyası ci suyun yuyulması həll.

In order to reduce the grade of copper, you can pretreat it by flotasiya or other methods, and then leACHIng qızıl after copper is separated.

3. Bulamaçda CN- və O2 konsentrasiyasının nisbətinə nəzarət edin

Ərzində qızılın yuyulması prosesi, air and Natrium siyanür must be added to ensure the leaching of gold. The diffusion rate of gold in the solution depends not only on the concentration of CN– and O2 in the solution, but also on the concentration of CN– per unit gold surface, the concentration of dissolved O2. the surface area of gold particles and the thickness of the electric double layer.

CN–/O2=4x(Dissolved oxygen diffusion coefficient/Natrium siyanid diffusion coefficient)

=4×(2.76×10-5cm/s ÷1.83×10-5cm/s)=4×1.5=6

Bu nisbət həll olunmuş qızılın həll olunmuş ion konsentrasiyasının həddi adlanır.

For different types of ore, its value can be adjusted in the range of 4.6 to 7.4 to determine the best benefit ratio. If excessive natrium siyanid or air is added during the Yuyulma prosesi, it will not increase the Yuyulma dərəcəsi of gold and cause waste. Therefore, in the Qızılın yuyulması prosesi, it is often necessary to analyze and control the Pulsuz siyanür and the oxygen content in the solution to keep the ratio of the two at about 6.

4. Establish the doza Balans Cyanide

natrium cyanide is the main consumption agent of qızılın siyanidləşmə prosesi. Therefore, the balance of natrium siyanidin dozası should be frequently studied. The so-called cyanide balance refers to the balance between the cyanide discharged from the leaching solution and the actual consumption of natrium cyanide, which is related to the process technical indicators, economic costs, ətraf mühital treatment and other costs.

In addition to the formation of various complexes and compounds, the loss of natrium cyanide also includes the Adsorbsiya of clay sludge, the adsorbsiya of mineral particles and the escape of a very small amount of Hidrogen siyanidi. The former consumption should account for about 90%. If it is lower than this value, it should be attributed to the quality of Natrium cyanide, raw ore components, and su balance, or the measurement in operation, or “dropping, leaking, bubbling and leaking”.

5. Control Reasonable Kalsium oksidi (CaO) Concentration

In the process of oxidative qızıl çıxarılması, Əhəng must be added.And it is very important to maintain a proper Kalsium oksidi concentration. Its main functions are:

CaO can increase the pH dəyəri of the leach solution, reduces the concentration of HCN produced and reduces the volatilization of HCN gas.

Due to the addition of Ca2+ in the solution, the yuyulma dərəcəsi of copper significantly decreased, prevenkonservləşdirməkg the formation of Fe (CNS) 4. and the concentration of CNS-ions in the solution decreased. Ca2+ prevents the combination of CN- with Cu and S, thus effectively reducing the consumption of cyanide.

After repeated trials, experts believe that it is reasonable to add Kalsium oxide 12 g/kg.

nəticədə

The above are 5 ways to reduce the amount of sodium cyanide in Qızıl siyanidləşmə plants. In actual istehsal, the amount of various elements can be appropriately adjusted according to the actual situation to reduce the consumption of sodium cyanide, save costs, and reduce the harm of Sianid çirkab suları to the envdəmiryalan deyir

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