Coupling compound moulded coal binder and preparation method thereof

Abstract

The invention discloses a coupling compound moulded coal binder and a preparation method thereof. The coupling compound moulded coal binder is a mixture prepared by mixing bentonite, tackifier, sodium carbonate, kaolin and sodium humate; the mixture comprises the following components in parts by weight: 350-600 parts of the bentonite, 45-55 parts of the tackifier, 3-5 parts of the sodium carbonate, 280-320 parts of the kaolin and 100-125 parts of the sodium humate; the tackifier is prepared by smashing 10-15 parts by weight of polyacrylate, 5-10 parts by weight of acrylamide, 3-5 parts by weight of cellulose, 20-25 parts by weight of cassava stalk, 3-5 parts by weight of modified starch and 0.2-0.5 part by weight of cross-linking agent into 50-100 meshes, and mxing the smashed materials. The preparation method comprises the following steps: preparing the tackifier, stocking, pretreating parts of the components, mixing, stirring and the like. The moulded coal binder has favorable waterabsorbtion performance, the moisture of an extruded and shaped coal bar is quickly evaporated and is easy to dry, thus solving the problems of high raw coal moisture, difficult moulded coal production and low shaping rate in rainy days in the south of China.

Description

technical field [0001] The invention relates to a molded coal binder and a preparation method thereof, in particular to a composite type coal binder and a preparation method thereof. Background technique [0002] Briquette is a kind of secondary processed coal which is made by adding briquette binder to pulverized coal, which is used in gasifier and replaces anthracite lump coal. [0003] In order to make full use of the existing coal resources and reduce the environmental pollution caused by coal burning, countries all over the world attach great importance to the research and development of coal briquettes. At present, some major coal-producing countries in the world have regarded briquette technology as the main component of clean coal technology, and briquette binder is the key technology in the production of briquette coal, especially in the cold pressing process. High-quality briquette, hundreds of binders have been researched in countries all over the world. The sel...

Images