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sodium hypochlorite process gold

role of sodium hypochlorite in ore beneficiation

role of sodium hypochlorite in ore beneficiation

Sodium hypochlorite leaching method mainly used for leaching low-grade ore tailings. In the leaching process sodium hypochlorite itself will slowly resolved oxygen some other metal sulfides will be oxidized by sodium hypochlorite hydroxide ion these metals will precipitate and promote the production of molybdate molybdenum solution

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bleach vinegar and salt dissolve gold

bleach vinegar and salt dissolve gold

Sep 13 2013 · Okay now for the hard part. In the last post we added vinegar in small increments to a mixture of sodium (or calcium) hypochlorite bleach and salt until we brought the Ph of that solution down to roughly 7.5.

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A Comparative Study of Cyanide and ChlorideHypochlorite

A Comparative Study of Cyanide and ChlorideHypochlorite

An oxide gold ore from Placer Surigao Del Norte was subjected to chloride-hypochlorite and cyanide leaching at room temperature at 3 different hours4 hours 12 hours and 24 hours. This project characterized the ore used and assessed the effects

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Sodium hypochlorite as a disinfectant

Sodium hypochlorite as a disinfectant

Sodium hypochlorite produces residual disinfectant. Disadvantages. Sodium hypochlorite is a dangerous and corrosive substance. While working with sodium hypochlorite safety measures have to be taken to protect workers and the environment. Sodium hypochlorite should not come in contact with air because that will cause it to disintegrate.

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Gold sulfuric acid and sodium hypochlorite / Золото

Gold sulfuric acid and sodium hypochlorite / Золото

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Apr 08 2017 · A piece of porcelain cup with gilding was placed in a glass 23 ml of water was added then 2.5 ml of concentrated sulfuric acid was added and mixed. Then added 1.5 ml of "Whiteness" (sodium

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Understanding Sodium Hypochlorite Treatment Plant Operator

Understanding Sodium Hypochlorite Treatment Plant Operator

Sodium hypochlorite is a clear slightly yellowish solution with a characteristic odor. As a bleaching agent it is usually a 5 percent sodium hypochlorite with a pH of about 11. More concentrated solutions (10 to 15 percent) have a pH of about 13. Sodium hypochlorite is unstable.

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Sodium Hypochlorite Handbook

Sodium Hypochlorite Handbook

preparing sodium hypochlorite by chlorinating a solution of caustic soda. Varying concentrations of this solution have found a multitude of applications so that the general public is now well acquainted with the material. This handbook will discuss sodium hypochlorite solutions. Sodium hypochlorite solutions have attained widespread use in

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OPERATOR ESSENTIALS

OPERATOR ESSENTIALS

sodium hypochlorite Rob Baur Knowledge Principle A practical consideration Sodium hypochlorite Sodium hypochlorite is chlorine gas dissolved in sodium hydroxide. This is essentially bleach. Sodium hypochlorite is a disinfectant that is liquid at room temperature and can be dosed with chemical feed pumps. Hypochlorite chemistry Na OCl

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Sodium Hypochloritean overview ScienceDirect Topics

Sodium Hypochloritean overview ScienceDirect Topics

Sodium hypochlorite is produced for the treatment of cooling water (CW). Sea water is pumped through strainers to banks of electrochiorination cells. Thyristor controlled rectifier units provide LV variable voltage DC supplies to the cells thereby controlling the rate of production of sodium hypochlorite by electrolysis within the cells. A by-product of the process is hydrogen which is of

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Sodium Hypochloritean overview ScienceDirect Topics

Sodium Hypochloritean overview ScienceDirect Topics

Sodium hypochlorite is produced for the treatment of cooling water (CW). Sea water is pumped through strainers to banks of electrochiorination cells. Thyristor controlled rectifier units provide LV variable voltage DC supplies to the cells thereby controlling the rate of production of sodium hypochlorite by electrolysis within the cells. A by-product of the process is hydrogen which is of

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Process development for recovery of copper and precious

Process development for recovery of copper and precious

The precipitation of Au and Ag from acidic thiourea leachate was investigated by using different amounts of sodium borohydride (SBH) as a reducing agent. The leaching of Pd and remained gold from the solid reside of 3rd leaching step was performed in NaClO-HCl-H2O2 leaching system and the effect of different parameters was investigated.

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Sodium Hypochlorite (Bleach) Storage Tanks  Specifications

Sodium Hypochlorite (Bleach) Storage Tanks Specifications

Sodium Hypochlorite Specific Gravity and Freezing Points. Sodium hypochlorite specific gravity ratings vary directly with the percent of excess sodium hydroxide remaining from the manufacturing process. The more sodium hydroxide the greater the specific gravity ratings will be for NaOCl solutions. The following data for specific gravity was

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ON-SITE GENERATION OF SODIUM HYPOCHLORITE BASIC

ON-SITE GENERATION OF SODIUM HYPOCHLORITE BASIC

2. Commercial Grade 12.5 Sodium Hypochlorite 3. Calcium Hypochlorite Tablets ( 65 available Chlorine ) 4. Ultraviolet 5. On-Site Generation of Sodium Hypochlorite ( <1 available Chlorine ) 3.0 BASIC OPERATING THEORY Generating Sodium Hypochlorite onsite is a simple and straightforward process that uses

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Manufacturing ProcessSodium Hypochlorite

Manufacturing ProcessSodium Hypochlorite

(Euro Chlor 2013)Therefore that s everything you need to create Sodium Hypochlorite with an extra hydrogen atom. There are many stages to be done to create sodium hypochlorite. The process is split in two components called "Reaction and Product Discharge" and

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Leaching of an oxide gold ore with chloride/hypochlorite

Leaching of an oxide gold ore with chloride/hypochlorite

Calcium hypochlorite produced a sluggish gold leaching kinetics requiring twice more time (46 h) to achieve the maximum gold recovery of 58 compared to sodium hypochlorite. To have a reasonable gold leaching kinetics it was found that OCl − in solution must be equal or higher than 10 g/L. The amount of HCl added and hence initial pH was

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Sodium Hypochlorite Handbook

Sodium Hypochlorite Handbook

preparing sodium hypochlorite by chlorinating a solution of caustic soda. Varying concentrations of this solution have found a multitude of applications so that the general public is now well acquainted with the material. This handbook will discuss sodium hypochlorite solutions. Sodium hypochlorite solutions have attained widespread use in

Get Price
OSEC® Hypochlorite Generation Systems

OSEC® Hypochlorite Generation Systems

The systems produce sodium hypochlorite onsite and on demand at a cost that is significantly lower than purchased hypochlorite. Unlike purchased hypochlorite the production on demand means that the hypochlorite does not degrade subsequently there is no reduction of product strength. The OSEC® On-site Chlorination System product line is

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What About Sodium Hypochlorite (NaOCl) Flow Control

What About Sodium Hypochlorite (NaOCl) Flow Control

Sodium hypochlorite is a potentially dangerous process media and Material Safety Data Sheets should be consulted for additional information and safety precautions considered before any final determination is made regarding the application. Who is Hayward About Hayward. Flow Control

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Hypochlorite plus Urea Explosion Accident Investigation

Hypochlorite plus Urea Explosion Accident Investigation

Hypochlorite plus Urea Explosion . A municipal water treatment company decided to switch from chlorine gas (Cl 2) disinfectant to liquid 12.5 sodium hypochlorite (NaOCl). Part of the motivation for the switch was to avoid the OSHA Process Safety Management (29 CFR 1910.119) requirement for a Process Hazard Analysis. They also believed the

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National Metal Finishing Resource Center (NMFRC)

National Metal Finishing Resource Center (NMFRC)

The results of the Users Survey indicate that 95 of the respondents with alkaline chlorination processes use sodium hypochlorite and 5 use chlorine gas plus sodium hydroxide. The shops that use chlorine gas tend to be the same shops that select sulfur dioxide

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Mining Copper Leaching With Sodium Hypochlorite- EXODUS

Mining Copper Leaching With Sodium Hypochlorite- EXODUS

Calcium hypochlorite produced a sluggish gold leaching kinetics requiring twice more time 46 h to achieve the maximum gold recovery of 58 compared to sodium hypochlorite to have a reasonable gold leaching kinetics it was found that ocl in solution must b Mining Copper Leaching With Sodium Hypochlorite.

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Effect of Pretreatment of Sulfide Refractory Concentrate

Effect of Pretreatment of Sulfide Refractory Concentrate

The majority of the refractory gold and silver occurs in occlusion in sulphides then precious metal dissolution is possi- ble by first oxidizing auriferous sulfide concentrate using sodium hypochlorite-sodium-hydroxide solution followed of pressure cyanidation of the oxidized concentrate for the extraction of precious metals.

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A Comparative Study of Cyanide and ChlorideHypochlorite

A Comparative Study of Cyanide and ChlorideHypochlorite

An oxide gold ore from Placer Surigao Del Norte was subjected to chloride-hypochlorite and cyanide leaching at room temperature at 3 different hours4 hours 12 hours and 24 hours. This project characterized the ore used and assessed the effects

Get Price
Gold sulfuric acid and sodium hypochlorite / Золото

Gold sulfuric acid and sodium hypochlorite / Золото

Click to view on Bing3 56

Apr 08 2017 · A piece of porcelain cup with gilding was placed in a glass 23 ml of water was added then 2.5 ml of concentrated sulfuric acid was added and mixed. Then added 1.5 ml of "Whiteness" (sodium

Author Химия и Химики Сhemistry-Сhemists Get Price
WO2013152424A1Chloride process for the leaching of gold

WO2013152424A1Chloride process for the leaching of gold

A process for the extraction of gold from a gold-bearing ore or concentrate comprising the steps of leaching the gold-bearing ore or concentrate with a lixiviant of hydrochloric acid and magnesium chloride at atmospheric pressure at a temperature of at least 90°C and an Eh of at least 900 mV. After a liquid/solids separation step the solution obtained is subjected to an organic solvent

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Make concentrated sodium hypochlorite (bleach)YouTube

Make concentrated sodium hypochlorite (bleach)YouTube

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Jan 16 2018 · This is a quick and effective method of producing more concentrated bleach than what is commercially available at many stores. Handling chemicals can be dangerous. Always take care. Gloves and

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ElectrochlorinationWikipedia

ElectrochlorinationWikipedia

In words this reads energy is added to sodium chloride (table salt) in water resulting in sodium hypochlorite and hydrogen gas. Seawater. On occasion companies will want to use seawater for this process due to its extreme low obtaining cost. The seawater used is usually brackish water or brine (i.e. a solution with >0.5 salinity).

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Effect of Pretreatment of Sulfide Refractory Concentrate

Effect of Pretreatment of Sulfide Refractory Concentrate

The majority of the refractory gold and silver occurs in occlusion in sulphides then precious metal dissolution is possi- ble by first oxidizing auriferous sulfide concentrate using sodium hypochlorite-sodium-hydroxide solution followed of pressure cyanidation of the oxidized concentrate for the extraction of precious metals.

Get Price
Sodium hypochlorite as a disinfectant

Sodium hypochlorite as a disinfectant

Sodium hypochlorite produces residual disinfectant. Disadvantages. Sodium hypochlorite is a dangerous and corrosive substance. While working with sodium hypochlorite safety measures have to be taken to protect workers and the environment. Sodium hypochlorite should not come in contact with air because that will cause it to disintegrate.

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How to Use Bleach on Gold Ore to Remove Gold Sciencing

How to Use Bleach on Gold Ore to Remove Gold Sciencing

Apr 24 2017 · Gold is an almost non-reactive metal but halogens — chlorine bromine fluorine and iodine — can dissolve it. Chlorine is the cheapest and lightest product that can achieve this. Bleach is the chemical compound sodium hypochlorite. When combined with hydrochloric acid the mixture produces chlorine that dissolves

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Batch-wise process from chlorine and caustic soda

Batch-wise process from chlorine and caustic soda

The plant is based on liquid jet ejector technology and on the availability of liquefied chlorine in containers 32 or 50 caustic soda solution and demineralized water. Electric power and chilled water are the only plant utilities required. Product obtained is sodium hypochlorite solution at 3 or 6 concentration as active chlorine.. Batch-wise process is a small-scale suitable technology

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Sodium Hypochlorite Bleach Polyethylene Storage Tanks

Sodium Hypochlorite Bleach Polyethylene Storage Tanks

Sodium hypochlorite (bleach) is used in a variety of applications particularly in disinfecting drinking water and wastewater. When storing this chemical three factors must be considered UV can degrade sodium hypochlorite so special precautions must be taken to reduce this effect.

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Chlorine Disinfection of Produce Washwater

Chlorine Disinfection of Produce Washwater

July 1998 CHLORINE DISINFECTION OF PRODUCE WASHWATER WHAT IS CHLORINE Chlorine for disinfection is available in three different physical phases solid (calcium hypochlorite Ca(OCl) 2) liquid (sodium hypochlorite NaOCl or common bleach) and gas (chlorine Cl 2) can be used in any form as a disinfectant for washers flumes dump tanks and hydrocoolers.

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Sodium Hypochlorite General Information Handbook

Sodium Hypochlorite General Information Handbook

Sodium Hypochlorite General Information Handbook 1.0 Introduction The consumer of sodium hypochlorite requires an understanding of the product from a chemical and handling perspective. The information below is a brief summary of the product and is intended to assist the consumer to buy the best product and to store and handle it correctly.

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Advances in Gold and Silver Processing

Advances in Gold and Silver Processing

0.5 sodium hypochlorite solution less than 30 of gold is dissolved in one hour. As the concentration of sodium hypochlorite increases the rate of gold dissolution increases. In a 2 sodium hypochlorite solution 88 of the gold is dissolved in 20 minutes and more than 91 of the gold dissolved in one hour. If the concentration

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Sodium Hypochlorite Suppliers Australia

Sodium Hypochlorite Suppliers Australia

Where to buy Sodium Hypochlorite in Australia. We have compiled a list of Sodium Hypochlorite suppliers in Australia including manufacturers distributors wholesale industrial retail and bulk suppliers. Use the suppliers website link for prices more information or to purchase. To find other products or services use the search box.

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