Glass cUllet conversIon To wAteRglass and used, with cement bypass flue dust, for cementless concrete building products (GUITAR)

水玻璃（硅酸钠）是一种商品工业化学品，以粉末或水溶液的形式出售，用于复合配方，用于加工纺织品和木材，以及制造陶瓷，硅胶和其他材料。水玻璃是通过将苏打（Na2CO3）和石英/硅砂（SiO2）在一个高能耗的过程中（1100-1200℃）熔化在一起来生产一种被称为cullet的无定形材料来制备的。然后将鱼片与水和加压蒸汽混合以产生水溶液。开发一种从废玻璃中制造水玻璃的可靠技术是大宗工业化学工业所迫切需要的。吉吉将展示一种适于生产“无水泥”混凝土产品的水玻璃制造工艺，该工艺与水泥旁通烟道粉尘（水泥生产产生的废物流）和/或磨粒高炉炉渣（GGBS，钢铁生产的副产品）一起使用。最终产品将是蒸压加气混凝土建筑砌块，正常密度砌块和预袋装的单组分粘合剂（带水玻璃的GGBS），不使用任何波特兰水泥，而是使用废料代替它。这些产品对环境的影响将大大低于目前市场上的产品。该项目将探索制备和净化水玻璃所需的策略，以提供与用于洗涤剂（水玻璃最大的单一市场）和纸张生产的商品散装化学品相当的水玻璃。2016年全球水玻璃市场规模估计为86亿美元，预计到2022年将达到110亿美元，其中欧盟市场份额约为20%。欧盟的年产能超过200万吨。新的水玻璃生产工艺的竞争优势在于其对环境的影响较小，生产成本较低。有两方面的环境效益：较低的工艺温度（约150°C而不是100 - 1100°C）和使用废玻璃碎片而不是原始材料（纯石英/硅砂）。从废玻璃碎片中生产水玻璃的成本估计为每吨100英镑（约95%的成本是氢氧化钠）。相比之下，商用硅酸钠溶液的市场价格约为每吨500至1000美元，随着对二氧化碳排放和随之而来的能源投入成本的处罚力度加大，预计价格将进一步上涨。

Waterglass (sodium silicate) is a commodity industrial chemical, sold as a powder or water solution, and used in compound formulations, for processing textiles and lumber, and in the manufacture of ceramics, silica gel and other materials. Waterglass is prepared by melting together soda (Na2CO3) and quartz/silica sand (SiO2), in an energy-demanding process (1100-1200 °C) to produce an amorphous material known as cullet. The cullet is then mixed with water and pressurised steam to produce an aqueous solution. The development of a robust technology for making waterglass from waste glass is highly desired by the bulk industrial chemical industry.GUITAR will demonstrate a manufacturing process for waterglass suitable for producing "cementless" concrete products when used together with cement bypass flue dust (a waste stream from the manufacture of cement) and/or Ground Granulated Blast Furnace Slag (GGBS, a by-product from steel production). The end products will be autoclaved aerated concrete building blocks, normal density blocks, and a pre-bagged one part binder (GGBS with waterglass) that do not use any Portland cement, instead using waste materials to replace it.These products will have a significantly lower environmental impact those currently on the market.The project will explore the preparation and purification strategies required to deliver waterglass equivalent to that produced as a commodity bulk chemical for use in detergents (the largest single market for waterglass) and paper production. The 2016 global market size of sodium silicate was estimated at $8.6 billion and is projected to reach $11.0 billion by 2022, with the EU sharing approximately 20% of the market. EU production capacity exceeds 2 million tonnes per annum.The competitive advantage of the new waterglass production process arises from its lower environmental impact and its lower cost of production. There are two-fold environmental benefits: lower process temperature (around 150 °C instead of \>1100°C) and use of waste glass cullet rather than virgin material (pure quartz/silica sand). The production cost for waterglass from the waste glass cullet is estimated at £100 £/tonne (about 95% cost being NaOH). In comparison, the market price of commercially available sodium silicate solution is of the order $500-$1000/tonne, and it is expected to further increase with increasing penalties for C02 emissions and consequent energy input costs.