Dissociation agent for water wetting type oil sand slurrying

Abstract

The invention discloses a dissociation agent for water wetting type oil sand slurrying. The dissociation agent is prepared from a penetrating agent, mineral oil, an asphalt emulsifier, a stripping agent, a PH value regulator and water, wherein the penetrating agent and the mineral oil constitute a mixture A, the penetrating agent accounts for 0.020%-0.025% of the mixture A in percentage by mass and is prepared from Oep-70 and Aep-98, and a mass ratio of Oep-70 to Aep-98 is (10:13)-(1:1); the asphalt emulsifier, the stripping agent, the PH value regulator and water constitute a mixture B, the asphalt emulsifier accounts for 0.2%-0.4% of the mixture B in percentage by mass, the asphalt emulsifier is prepared from Span-80 and Tween-80, a mass ratio of Span-80 to Tween-80 is (1:12)-(1:8), the stripping agent accounts for 0.005%-0.010% of the mixture B in percentage by mass, and the PH value regulator accounts for 0.3%-0.5% of the mixture B in percentage by mass. The dissociation agent is higher in physicochemical stability, and not only can meet the requirement of follow-up thermochemical washing for grain size of water wetting type oil sand grains, but also can improve the oil-sand separation effect.

Description

technical field [0001] The invention relates to an oil sand collection technology, and belongs to an oil sand treatment agent for splitting crushed coarse oil sand particles into fine oil sand particles in a slurry state, in particular a water-moisturizing oil sand slurry dissociating agent. Background technique [0002] Oil sands, also known as "tar sands", "heavy oil sands" or "tar sands", is a mixture of bitumen, sand, ore-rich clay and water, with a bitumen content of 7%-14%, sand and clay Other minerals account for 80%-85%, water content 3%-6%. my country's oil sand resource reserves have reached 100 billion tons according to preliminary estimates, and it is an important unconventional oil resource. The development of oil sands is mainly focused on the mining method and how to extract bitumen oil from oil sands. According to the different oil sand structures, there are three main oil sand separation technologies: solvent extraction, pyrolysis and dry distillation, and...

AI Technical Summary

Problems solved by technology

Usually, conventional mining jaw and roller crushers are used to crush oil sand blocks. The working principle is that the actuator of the crusher squeezes, cuts and throws the oil sand, so that the oil sand is crushed under the action of external force. This working principle is more effective for solid minerals with a certain structural strength, but it is not ideal for thixotropic soft solid materials such as oil sands, especially when the particle size of oil sand blocks is broken to 5cm-8cm, oil When the sand is sheared by an external force, it will produce compaction and creep, and the asphalt and sand will bond to the executive parts of the crushing mechanism of the equipment, causing the moving parts of the crusher to be stuck, making it impossible to carry out continuous oil sand crushing operations. Unable to meet the minimum requirements of the thermochemical water washing method for the particle size of oil sands