| abstract |
PROBLEM TO BE SOLVED: To provide materials for supplying minerals for promoting the growth of aquatic plants such as phytoplankton, aquatic plants and seaweeds, and to increase the number of aquatic animals growing on the surface with aquatic plants and seaweeds. Produce blocks at low cost. They will also be installed in the sea to improve the aquatic ecosystem and increase catch. SOLUTION: From a blast furnace slag having a vitrification basicity of 1.4 or less, a mixture of solid powder and grains containing a compound of ferrous oxide, calcium oxide and silicon oxide, and calcium hydroxide powder Water is added to the resulting mixture to form hydrates between the particles, and aggregates are produced. This is installed in the water to release ferrous ions and silicate ions, and to help the growth of silicate plankton, seaweed, aquatic plants, etc. A solid powder-grain mixture containing ferrous oxide, calcium oxide, and silicon oxide compounds obtained by aging the solidified steelmaking slag, and calcium hydroxide powder as raw materials There is also a case. [Selection] Figure 1 |