Effect of basicity on the flow and crystallization behavior of synthetic nickel–iron alloy residue

Process Optimization and Mechanism Study for Sulfur Recovery from High-Silica Phosphogypsum via Carbothermal Reduction Smelting

“…Slag wool, a wool-like mineral fiber, primarily comprises 36–42 wt % SiO 2 , 28–47 wt % CaO, 9–17 wt % Al 2 O 3 , 3–12 wt % MgO, and a minor amount of iron oxidation. It is produced from molten slag via centrifugal/blowing processes. − The molten slag with an amorphous structure for producing slag wool should also simultaneously meet the requirements of acidity coefficient ( M k ), viscosity coefficient ( M η ), and hydrogen ion index value (pH). , …”

“…35−39 The molten slag with an amorphous structure for producing slag wool should also simultaneously meet the requirements of acidity coefficient (M k ), viscosity coefficient (M η ), and hydrogen ion index value (pH). 40,41 By increasing the operating temperature of the traditional process of phosphogypsum-based acid production, phosphogypsum can be decomposed under molten conditions, which can result in liquid slagging to solve the problem of kiln ringing. Simultaneously, the molten slag obtained could be used for the production of slag wool.…”

“… 35 − 39 The molten slag with an amorphous structure for producing slag wool should also simultaneously meet the requirements of acidity coefficient ( M k ), viscosity coefficient ( M η ), and hydrogen ion index value (pH). 40 , 41 …”