Bonsoir ! Merci pour votre commentaire. Si vous ne pouvez pas obtenir des cristaux d’iode ou du iodure de potassium, vous pouvez concentrer votre solution d’iode à 2 % en utilisant une méthode d’évaporation. Voici une méthode pratique : 1. Versez votre solution d’iode à 2 % dans un récipient résistant à la chaleur. 2. Chauffez doucement (sans ébullition) pour réduire le volume de moitié. Cela augmentera la concentration à environ 4 %. 3. Une fois refroidie, utilisez cette solution concentrée pour essayer de dissoudre l’or. Cependant, pour des résultats optimaux, une solution d’iode-iodure concentrée est idéale. Si vous trouvez des matériaux, voici comment la préparer : 1. Mélangez 50 g de iodure de potassium (KI) avec 200 ml d’eau distillée. 2. Ajoutez lentement 25 g de cristaux d’iode tout en remuant. 3. Ajoutez de l’eau distillée pour compléter à 500 ml. Cette méthode fonctionne bien pour dissoudre l’or des objets plaqués.

bonsoir merci de votre réponse j'ai regardé toute vos vidéos c'est du très bon travail j'aimerai récupérer un d'or le soucis c'est que j'ai acheté de l'iodine lugol 2% sans alcool je voulais savoir si il fallait ajouté de l'alcool dans la solution pour dissolver l'or ou je peut récupérer l'or avec cette solution d'iodine sans alcool

bonsoir merci de votre réponse j'ai regardé toute vos vidéos c'est du très bon travail j'aimerai récupérer un d'or le soucis c'est que j'ai acheté de l'iodine lugol 2% sans alcool je voulais savoir si il fallait ajouté de l'alcool dans la solution pour dissolver l'or ou je peut récupérer l'or avec cette solution d'iodine sans alcool

@Abdallahbolori The base material of your iPhone casing is likely aluminum, which can be dissolved completely in hydrochloric acid (HCl). This method will leave behind the gold plating as foils, which you can easily collect. Process: 1. Place the gold-plated casing in a non-reactive container (glass or plastic). 2. Add diluted HCl to dissolve the aluminum. 3. Once the reaction is complete, the gold foils will remain intact. 4. Filter or decant the solution to collect the gold. Important: Work in a well-ventilated area, wear protective gear, and handle HCl with care.

@lion9419 Thank you for your comment! If you're based in India, IndiaMart is one of the best platforms to source chemicals like iodine crystals or potassium iodide-you’ll need to request a quote from suppliers. If you're in another country, I’d recommend checking Amazon or Alibaba, as they have global shipping options. Just ensure you're sourcing from a reputable seller and verify the purity of the chemical before purchase.

Thank you for your kind words, and I’m glad the video was helpful! Recovering gold from 100 grams of fully gold-plated pins using the iodine-iodide method requires careful planning to ensure an efficient and clean process. Here’s a breakdown for your specific query: 1. Prepare the Iodine-Iodide Solution For leaching gold from gold-plated pins, prepare the solution in the following ratio: Potassium Iodide (KI): 50 grams Iodine Crystals: 25 grams Distilled Water: 500 mL Steps: 1. Dissolve the potassium iodide (KI) in 200 mL of distilled water. 2. Gradually add the iodine crystals while stirring to form the triiodide complex (I₃⁻). 3. Add more distilled water to make up the total volume to 500 mL. --- 2. Leaching Gold from the Pins 1. Place the gold-plated pins in a non-reactive container. 2. Pour the iodine-iodide solution over the pins until they are fully submerged. 3. Stir or agitate the solution occasionally to ensure even contact. 4. Continue the process until all visible gold is dissolved. --- 3. Adjust pH and Precipitate the Gold Step 1: pH Adjustment (Using Sodium Hydroxide): 1. After the leaching process is complete, filter the solution to remove any solids or debris. 2. Gradually add sodium hydroxide (NaOH) to the solution to adjust the pH to a range of 5-7. Use a pH meter or litmus paper to monitor the pH. 3. If the solution is too acidic, add small amounts of NaOH at a time to avoid overshooting the desired pH. Step 2: Precipitation with Ascorbic Acid: 1. Once the pH is balanced, slowly add ascorbic acid to the solution while stirring. For 100 grams of gold-plated pins, start with 5-10 grams of ascorbic acid (amount depends on gold content). 2. Stir the solution until gold precipitates as a fine brown or black powder. --- Additional Tips: 1. Filter and Wash: After precipitation, filter the solution to collect the gold powder and wash it with distilled water to remove impurities. 2. Yield Expectations: Fully plated gold pins typically yield 1-2 grams of gold per 100 grams, depending on the plating thickness.

@TrinityGoldRecovery thanx for the response

🙏💚

@@TrinityGoldRecoveryhello sir please reply me

@Abdallahbolori @Abdallahbolori The base material of your iPhone casing is likely aluminum, which can be dissolved completely in hydrochloric acid (HCl). This method will leave behind the gold plating as foils, which you can easily collect. Process: 1. Place the gold-plated casing in a non-reactive container (glass or plastic). 2. Add diluted HCl to dissolve the aluminum. 3. Once the reaction is complete, the gold foils will remain intact. 4. Filter or decant the solution to collect the gold. Important: Work in a well-ventilated area, wear protective gear, and handle HCl with care.

Yes, the iodine-iodide leaching process is effective for recovering gold not only from CPU processors but also from RAM gold fingers and other gold-plated electronic components. The key is proper preparation of the material to maximize the solution's efficiency.

Yes, you can use ferrous sulfate (FeSO₄) as a precipitating agent to recover gold from an iodine-iodide solution. It's an effective and relatively inexpensive choice for precipitating gold, provided the solution is prepared correctly. Here's how it works and the steps to follow: Using Ferrous Sulfate to Precipitate Gold Prepare the Solution for Precipitation: Before adding ferrous sulfate, ensure the solution is clear and free of solids (filter if necessary). Check and Adjust pH: For ferrous sulfate to work effectively, the solution's pH should be in the range of 6-7 (neutral to slightly acidic). If the solution is too acidic (below pH 5), add a base like sodium hydroxide (NaOH) or sodium bicarbonate (baking soda) gradually to raise the pH. Use a pH meter or litmus paper to measure the pH accurately. Add Ferrous Sulfate: Dissolve ferrous sulfate in distilled water separately to ensure even distribution. Slowly add the ferrous sulfate solution to the iodine-iodide solution while stirring. The gold will precipitate as a fine brown or black powder, depending on purity. Wait for Precipitation to Complete: Allow the solution to rest for a few hours to ensure all the gold has settled. Filter and Wash: Filter the solution to collect the gold precipitate. Wash the precipitate with distilled water to remove any remaining solution or impurities. Why pH Adjustment Is Necessary If the solution is too acidic, the ferrous sulfate may not effectively reduce the gold ions to metallic gold. At a pH closer to neutral, ferrous sulfate reacts efficiently with the gold-iodide complex, ensuring complete precipitation. Tips for Success Test the pH After Precipitation: Check again to ensure the solution has stabilized. Safety First: Ferrous sulfate can cause staining and should be handled with gloves. Work in a well-ventilated area or under a fume hood. Efficiency Check: Once precipitation is complete, test the remaining solution with stannous chloride to confirm all gold has been recovered.

Thank you for the kind words, and I’m glad the iodine leaching method works well for you! Your approach of reusing the solution until it’s saturated is efficient. To reactivate the iodine solution after precipitating the gold, you’ll essentially need to regenerate the iodine content. Here’s how: Steps to Reactivate Iodine Solution Precipitate the Gold Completely: Make sure all the dissolved gold has been precipitated. The solution should be clear or have a slight color change indicating no more dissolved gold. Regenerate the Iodine: Add fresh iodine crystals (I₂) or potassium iodide (KI) to replenish the iodine levels. The typical starting ratio for reactivation: For every 500 mL of solution: Add 10-20 g iodine crystals (I₂) and 10 g potassium iodide (KI). Stir thoroughly to dissolve the added iodine and regenerate the triiodide ion (I₃⁻) complex. Adjust the pH (if needed): Use a small amount of sodium hydroxide (NaOH) or hydrochloric acid (HCl) to bring the solution back to a neutral or slightly acidic pH (~5-7). Test with a pH meter or litmus paper. Filter the Solution: Remove any leftover impurities or debris before reusing the solution. Signs of Effective Reactivation The solution returns to a rich, dark brown color, indicating that iodine is available again. It resumes dissolving gold from plated items effectively. Additional Tips Monitor Iodine Levels: Repeated use will slowly consume the iodine, even after reactivation. If the solution becomes ineffective, you may need to prepare a fresh batch. Recycle KI and I₂: After many cycles, test the solution's gold-carrying capacity to decide if it’s worth continuing.

Sodium hydroxide (NaOH) is indeed commonly used for pH adjustment, especially in refining processes. When precipitating gold from a solution (e.g., using sodium metabisulfite, oxalic acid, or other reducing agents), the pH plays a crucial role in ensuring effective precipitation. Optimal pH for Gold Precipitation pH range: Typically, the pH should be between 3 and 4 when dropping gold from a solution. If the pH is too low (<3), the solution may remain too acidic, making it harder for the reducing agent to work effectively. If the pH is too high (>4), impurities might also precipitate alongside the gold, reducing the purity.

@TrinityGoldRecovery thanks 😊 can we use sodium hydroxide instead of urea in aqua regia?

Yes, sodium hydroxide (NaOH) can be used as a neutralizing agent instead of urea in aqua regia processing. However, it is not as commonly recommended because it reacts more vigorously with acids and can lead to localized heating or splattering if not used carefully. Here’s a comparison and some considerations: Using Sodium Hydroxide vs. Urea: 1. Reaction with Aqua Regia: Urea: Neutralizes excess nitric acid in a controlled manner, forming water and nitrogen-based byproducts. NaOH: Neutralizes acids by forming water and salts (e.g., NaCl). It reacts more violently with the strong acids in aqua regia. 2. Safety Concerns: NaOH is highly caustic and can cause burns on contact with skin or eyes. Its vigorous reaction with aqua regia can also generate significant heat and may cause splattering. Urea’s reaction is milder and safer to handle, especially for beginners. 3. End Result: Both methods result in a solution ready for gold precipitation, but NaOH can increase the chance of overshooting the pH and creating insoluble impurities if not added carefully. Precautions When Using NaOH: Dilution: Always dissolve NaOH in water before adding it to the aqua regia solution. Never add solid NaOH directly to acid. Controlled Addition: Add the NaOH solution slowly while monitoring the pH to avoid overshooting into the alkaline range. Ventilation: The reaction will release heat and potentially harmful fumes. Work in a well-ventilated area or under a fume hood. pH Monitoring: Aim for a pH of 1-2 to neutralize excess nitric acid while keeping the solution acidic for gold recovery. Recommendation: While NaOH can be used as a substitute, urea remains the safer and more commonly recommended choice for neutralizing excess nitric acid in aqua regia. If you decide to use NaOH, exercise extreme caution and use proper protective equipment.

Yes, the iodine-iodide leaching method can work with sand or other materials containing gold. This method relies on the iodine-iodide solution forming a soluble gold iodide complex, which dissolves gold from the material. However, the concentration and process efficiency depend on factors like the gold content, particle size, and sand's composition. Concentration for Leaching Gold from Sand For leaching gold from sand, a higher concentration of iodine solution is usually required because: The gold is dispersed and may not be as accessible as in gold-plated materials. Other substances in the sand might compete with the gold for iodine or create unwanted reactions. A concentration of 10-15% w/v iodine is typically recommended for more effective leaching of gold from sand. Here’s why: A stronger solution provides more active iodine (I₃⁻) for the leaching process. It ensures that gold is fully dissolved and minimizes losses. General Steps for Processing Sand with Iodine-Iodide Prepare the Iodine Solution: Use a ratio of 100-150 g iodine and 200 g potassium iodide per liter of water to create a 10-15% w/v iodine solution. Mix the Solution with Sand: Add the solution to the sand in a mixing container, ensuring all the material is submerged. Stir or agitate the mixture to ensure contact between the gold and the solution. Leaching Time: Allow the solution to work for several hours to a day, depending on the gold content and particle size. Additional Tips pH Adjustment: Maintain a neutral to slightly acidic pH (5-7) for effective gold leaching. Sand Pretreatment: If possible, pre-wash or sieve the sand to remove impurities and improve gold exposure. Testing: Start with a small batch to optimize the process before scaling up.

Thank you for your comment! A 2% iodine solution won't be concentrated enough for gold recovery, as the iodine content is too low to effectively dissolve gold. I recommend sourcing iodine crystals for better results. If those aren't available, you could try increasing the iodine concentration by evaporating some water from the 2% solution or using alternative methods, but success might vary.

​@TrinityGoldRecovery that's what I was thinking. Distillation and evaporation might be the way to go. Does it need to be anhydrous?

I saw it on IndiaMart, but no pricing unless you request a quote. Also on Alibaba. No idea what's a good place, though.

Thank you for your thoughts, Anya! Here's some additional insight: 1. Distillation/Evaporation: While evaporation can help increase the concentration of a 2% iodine solution, achieving a high enough concentration for gold recovery might still be challenging. Anhydrous iodine isn’t necessary for this process, as the iodine will dissolve in water to form the active iodide complex needed for gold leaching. 2. Sourcing Iodine Crystals: IndiaMart and Alibaba are good starting points, but you’re right about needing to request quotes. When sourcing, ensure the iodine is at least 99% pure. Depending on your location, check local chemical suppliers or online platforms like eBay or Amazon as well. If iodine crystals are too hard to obtain, potassium iodide with tincture iodine can be an alternative for creating a suitable leaching solution.

@TrinityGoldRecovery ah! I wondered if KI would be doable, thanks for that! It IS far easier to find. I did see a chemical supplier, but even they were pretty pricy.

@Alberto Hernandez-vz8lr Muchas gracias por tus palabras tan amables! Es un placer poder compartir este conocimiento con personas apasionadas como tú. La recuperación de oro es un arte, y juntos seguimos aprendiendo y mejorando. ¡Un saludo y gracias por tu apoyo constante!

So nice of you

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