Marble tile blank sintered by using multi-component composite flux at low temperature and preparation method thereof

Abstract

The invention discloses a marble tile blank sintered by using a multi-component composite flux at low temperature. The marble tile blank comprises the following components in percentage by weight: 64%-69% of SiO2, 18%-20% of Al2O3, 0.4%-0.6% of Fe2O3, 0.15%-0.2% of TiO2, 0.4%-2.0% of CaO, 1.4%-2.2% of MgO, 3.5%-4.5% of K2O and 2.0%-3.5% of Na2O. According to the blank, alkali metal and alkaline-earth metal oxide are compounded to serve as a fluxing agent, lithium oxide is not added, low-temperature fast firing of marble tiles can be achieved, a firing period is short, and the physical performance of fired products meets national standards in China. The invention further discloses a preparation method of the marble tile blank sintered by using the multi-component composite flux at low temperature. The preparation method is simple, the drying strength of a prepared marble tile is larger than or equal to 2.5 Mpa, the breaking strength of a sintered product is larger than or equal to 35 Mpa, and a water absorption rate is smaller than 0.1%.

Description

technical field [0001] The invention relates to the field of ceramic materials, in particular to a low-temperature firing marble tile blank with a multi-element composite flux and a preparation method thereof. Background technique [0002] Ceramics are industries with high energy consumption. Taking porcelain tiles as an example, the firing temperature of traditional production technology is relatively high, the firing cycle is long, energy consumption and cost are high, and output is low, which seriously hinders the development of the industry. At present, the energy utilization rate of my country's ceramic industry is far behind that of foreign countries. The energy utilization rate in developed countries is generally as high as 50%, the United States reaches 57%, while our country only reaches 28% to 30%, so it is imperative to reduce energy consumption and improve energy utilization rate. In order to solve or alleviate this situation, low-temperature fast-burning techno...

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Problems solved by technology

Patent CN201210446388.9 uses lithium feldspar in lithium ore tailings as brick cooling material, overcomes the shortcomings of high firing temperature and long firing time of glazed tiles in the prior art, and realizes low-temperature and fast firing of glazed tiles

But Li 2 The surface tension of the O melt is small, and the capillary force generated is also small, which is not conducive to the tension of the green body particles, and is not conducive to the progress of the porcelain reaction, so that the comprehensive performance of the green body after firing is poor. With the increase of lithium oxide content, The flexural strength of the melt decreases, the melting temperature range narrows, and the thermal expansion coefficient increases

Patent CN1275547A introduces 10-30% albite feldspar or 1-4% alkaline earth metal minerals into the billet, and the billet is fired at 1230°C for 120 minutes. The cooling effect of feldspar or alkaline earth metal minerals is not significant, the firing temperature is still high, and the firing cycle is long

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