1: Flocculation principle
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2025-08-16 01:40
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tio2 technology
2. Barite calcination method A solution of barium sulfide is prepared. The sulfuric acid and zinc oxide are reacted, purified by adding potassium permanganate and zinc powder, and compressed to obtain a zinc sulfate solution. Then, the prepared barium sulfide solution is mixed and subjected to a metathesis reaction to obtain a mixture of zinc sulfide and barium sulfate, and then the precipitate is subjected to pressure filtration, calcination, wet grinding, drying, and pulverization to obtain a zinc white product.
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Another essential application of titanium dioxide is in the manufacture of plastics. It enhances the strength and durability of the polymer matrix while improving its resistance to UV radiation. This makes it an excellent additive for outdoor products such as garden furniture, automotive parts, and roofing materials, where exposure to sunlight can cause deterioration over time.
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Furthermore, this packaging has been shown to have both antibacterial and photocatalytic activity, the latter of which reduces ultraviolet (UV) exposure (5Trusted Source, 6).
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Histoire
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Although barium sulfate is almost completely inert, zinc sulfide degrades upon exposure to UV light, leading to darkening of the pigment. The severity of this UV reaction is dependent on a combination of two factors; how much zinc sulfide makes up the pigments formulation, and its total accumulated UV exposure. Depending on these factors the pigment itself can vary in shade over time, ranging from pure white all the way to grey or even black. To suppress this effect, a dopant may be used, such as a small amount of cobalt salts, which would be added to the formulation. This process creates cobalt-doped zinc sulfide. The cobalt salts help to stabilize zinc sulfide so it will not have as severe a reaction to UV exposure.
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We even use titanium dioxide when brushing our teeth as it’s found in many toothpastes.
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2025-08-15 23:54
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One of the most common worries about titanium dioxide is that it could be a cancer-causing agent. The link between cancer and titanium dioxide traces back to a 1985 study where rats were exposed to high levels of titanium dioxide for two years, causing lung cancer. However, not all experts are convinced by this study.
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2025-08-15 23:49
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NIOSH research has shown that long-term exposure to high levels of titanium dioxide dust can lead to lung fibrosis, a condition characterized by the scarring of lung tissue. As a result, NIOSH recommends employers implement engineering controls, such as local exhaust ventilation, and administrative measures, like proper personal protective equipment (PPE) and regular medical surveillance, to minimize worker exposure.
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