The leaching of the electrolytic zinc acid leaching slag: 1500 ml of ammonia-ammonium sulphate solution is used as the ammonia immersion liquid, wherein the ammonia concentration is 6. Omol / ammonium sulfate molar concentration is 0. 9mol / L, added per cubic meter of ammonia immersion liquid 0. 075kg of sodium dodecylbenzenesulfonate, 0. 45kg of sodium fluorosilicate, 0.75kg of dicyandiamide. 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 %), added to the above ammonia-ammonium sulfate immersion liquid for three-stage leaching, each leaching time is 2 hours, after solid-liquid separation, 1450ml final immersion liquid (taken away in the remaining liquid slag), zinc leaching The rate of 90. 02%; the final solution containing zinc 65. 6g / L; containing S0 4 2 - 69. 64g / L ;
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Some runners even have built-in dampening systems to slow down the door's closing speed, ensuring safety and preventing accidental slamming Some runners even have built-in dampening systems to slow down the door's closing speed, ensuring safety and preventing accidental slamming
Standard sizes and designs are generally less expensive than customized ones Standard sizes and designs are generally less expensive than customized ones
Any deviation could lead to friction, noise, or even damage to the door Any deviation could lead to friction, noise, or even damage to the door
The size of the pull can also dictate its impact; larger pulls can serve as statement pieces, while smaller ones maintain a subtle presence The size of the pull can also dictate its impact; larger pulls can serve as statement pieces, while smaller ones maintain a subtle presence