To reduce Cd phytoavailability in calcareous soils, the effects of soil amendments of red mud, rape straw, and corn straw in combination with zinc fertilization on Cd extractability and phytoavailability to spinach, tomato, Chinese cabbage and radish were investigated in a calcareous soil with added Cd at 1.5 mg kg-1. The results showed that water soluble and exchangeable Cd in soils was signif...

To maximize the utilization of red mud in geopolymers, a mud–metakaolin (RM-MK) geopolymer and mud–fly ash (RM-FA) were prepared, respectively. The effects content on compressive strength microstructure geopolymers investigated under three different curing conditions. results showed that decreased linearly with an increase content, whether at room temperature or 80 °C. Surprisingly, autoclave, ...

In this paper, Bayer red mud and ground granulated blast furnace slag were formed into three different ratios (7:3, 5:5 3:7) of alkali-activated cementitious materials (AASR) using a water glass solution as the alkali activator. By studying compressive strength content, effect content on mechanical properties AASR was analyzed. The influence mechanism revealed by variation micro-porosity, conne...

Bauxite residue (red mud) generated during alumina production is a highly alkaline solid waste. The red mud mainly stored on land, but it can cause harm to the surrounding environment and human health. transformation of into soil feasible method for large-scale disposal mud, alkali removal key process that controls soil. In this study, calcification dealkalization with small particle size was c...

Experiments were conducted to investigate the mineral phase transformation technology of high-iron red mud, effectively extracting valuable iron minerals and reducing hazards associated with mud stockpiling storage. A magnetic concentrate an grade 55.84% recovery 93.75% could be obtained at a roasting temperature 560 °C, time 15 min, CO concentration 20% total gas flow 500 mL/min. combination X...