Environment protection coal-saving agent for cement vertical kiln

Abstract

The invention provides an environmental-friendly coal-saving agent for a cement shaft kiln, comprising the following raw materials by weight portion: 3-7 portions of a coal combusting low-temperature modifying agent, 2-6 portions of a compound sulphur-fixing agent, 0.5-0.96 portion of a combusting inductive agent, 3-7 portions of a raising agent, 56-96 portions of a combusting poising agent, and 5-15 portions of a highly-efficient sulphur-fixing agent. The coal combusting low-temperature modifying agent can be potassium permanganate, potassium chlorate, potassium perchlorate, sodium chlorate, sodium nitrate and the like; the compound sulphur-fixing agent can be sodium carbonate, calcium oxide and the like; the raising agent can be waste liquor of paper mill containing Na or / and Ca sulphonate and the like; and the combusting poising agent can be a chemical waste reducing substance containing sodium chloride and the like. The method solves the problems of environmental pollution and resource waste in the prior art, uses compatibility of multiple chemical raw material of 6-10 percent and chemical waste to prepare the coal-saving agent with small dosage and fast effect to be added to the production of the cement shaft kiln in trace quantity, and has the advantages of resource conservation by using waste, coal conservation and consumption reduction, and reduction of dust and SO2 discharge and environmental pollution.

Description

Technical field [0001] The invention relates to an environment-friendly and coal-saving agent for cement vertical kiln production. Background technique [0002] Chinese invention patent publication CN1493542 provides an energy-saving additive for shaft kiln cement calcination, including: CaF 2 、H 2 O, Mg 6 [Si 4 o 10 ](OH) 8 , Y 2 o 3 , CeO 3 , active silicon and organosilicon, which are actually used in physical mineral products and their mass percentages are: fluorspar (fluorite) 20-35%, perlite and vermiculite 10-20%, rare earth 5-10%, serpentine Stone 15-30%, diatomaceous earth 10-20%. The shortcomings are: 1. Add fluorite and other materials, fluorite mainly contains C a f 2 , HF will be produced after the combustion reaction, and will destroy the atmospheric ozone layer when diffused into the air; 2. The proportion of cement raw materials is 0.5-0.8%, and the dosage is large. Chinese invention patent publication CN1995298 discloses a special coal-saving syn...

AI Technical Summary

Problems solved by technology

The shortcomings are: 1. Add fluorite and other materials, fluorite mainly contains C a f 2 , HF will be produced after combustion reaction, which will destroy the atmospheric ozone layer when diffused into the air;

Chinese invention patent publication CN1995298 discloses a special coal-saving synergist for shaft kilns, which adopts the following components and dosage (% by weight): potassium permanganate 2.5-4.5%; potassium nitrate 1.5-3.5%; ammonium nitrate 0.5% -2.0%; sodium chloride 90.0-95.0%, the synergist is mainly pure industrial raw materials such as oxidant (such as potassium permanganate), sodium chloride, etc., and the dosage is 0.02-0.05%, although it is effective in actual production , there is also the disadvantage that the amount is too large, and in today's very tight resources, it is also an invisible waste to use this material to save that material