Another advantage of retrac bits is their efficiency. These bits are designed to create clean and precise boreholes, reducing the need for additional reaming or cleaning of the hole These bits are designed to create clean and precise boreholes, reducing the need for additional reaming or cleaning of the hole
The produced barium sulfide enters the leacher, and the temperature is controlled above 65°C to obtain a barium sulfide content of 70%, and then enters the clarification barrel, add zinc sulfate for reaction after clarification, control the zinc sulfate content to be greater than 28%, pH=8~9, and obtain a mixture of barium sulfate and zinc sulfide with a density of 1.296~1.357 g/cm3.
- In the food industry, sodium bicarbonate is a staple ingredient in baking, where it acts as a leavening agent, causing dough and batter to rise. Suppliers in this sector often provide food-grade sodium bicarbonate, which is safe for consumption and adheres to stringent food safety regulations. They also cater to specialized needs, like organic or non-GMO options, to meet the growing consumer preference for natural and eco-friendly products.
Le lithopone a été découvert dans les années 1870 par DuPont. Il a été produit par la Krebs Pigments and Chemical Company, entre autres1. Il se faisait en différents grades, en fonction de la teneur en sulfure de zinc. Les qualités « bronze » et « or » contenaient 40 à 50 % de sulfure de zinc, ce qui les rendaient particulièrement couvrantes2. Bien que ce pigment ait atteint son pic de popularité autour de 1920, il s'en produisait encore annuellement plus de 220 000 tonnes en 1990. Il est principalement utilisé dans les peintures, les pâtes et les plastiques3.