Method for preparing porose glass composite material using iron ore tailings

The invention is a method for preparing multiporous glass composite with ironstone gangue, adopting two steps: 1. adopting iron gangue, bauxite, calcium carbonate and waste glass as raw materials to prepare basic glass powder, crushing and finely grinding the iron gangue, and batching the iron gangue 48-65wt%, bauxite 5-9wt%, calcium carbonate 10-20wt%, and waste glass 15-30wt%; mixing them uniformly, melting and baking, water- quenching and grinding and finally obtaining the glass powder; 2. preparing multiporous glass ceramic materials, and adding in calcium carbonate in 1-5wt% of the basic glass, sodium phosphate in 6-10wt% of the basic glass, anhydrous sodium carbonate in 1-3wt% of the basic glass and borax in 1-6wt% of the basic glass, grinding and mixing them, and moulding and obtaining raw blanks, sintering the raw blanks at high temperature and cooling to normal temperature and finally obtaining the products. And the products have bulk densities of 1.5-2.8 g/cm3, normal- temperature tensile strength of 32-60 MPa and are good heat- insulating materials.