Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for preparing micron-scale spherical weighting material from iron concentrate powder

A technology of iron concentrate powder and weighting material, which is applied in the directions of chemical instruments and methods, drilling compositions, etc., to achieve the effects of reducing production costs, easy availability of raw materials and low prices

Active Publication Date: 2021-11-12
SINOSTEEL MAANSHAN INST OF MINING RES CO LTD +2
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no relevant patents and literature reports in China

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Raw material selection density is 4.5g / cm 3 The hematite, limonite mixed iron concentrate powder is used as raw material.

[0028] (1) Choose a density of 4.5g / cm 3Hematite, limonite mixed iron concentrate powder, through grinding-classification-coarse and fine separation of spiral chute to obtain a density of 4.9g / cm 3 The high-grade hematite and limonite mixed iron ore concentrate powder; after filtering, drying or sun-drying the obtained high-grade hematite and limonite mixed iron concentrate powder, after crushing and grinding, 200 Sieve through a mesh physical sieve, and then grind with a Raymond mill to obtain micropowder particles with a particle size distribution D90 of 26 μm.

[0029] (2) Apply a negative charge to the prepared micropowder particles with a particle size distribution D90 of 26 μm using a paradigm generator, so that the surface of the particles has a uniform negative charge, and are transported to the high-temperature spheroidizing furnace thro...

Embodiment 2

[0032] Raw material selection density is 4.6g / cm 3 specularite concentrate powder.

[0033] (1) Choose a density of 4.6g / cm 3 specularite concentrate powder, through grinding-classification-coarse and fine separation of spiral chute to obtain a density of 5.0g / cm 3 High-grade specularite concentrate powder; after filtering, drying or sun-drying, the obtained high-grade specularite concentrate powder is crushed and ground, sieved through a 200-mesh physical sieve, and then ground by a Raymond mill , can produce fine powder particles with a particle size distribution D90 of 22 μm.

[0034] (2) The prepared micropowder particles with a particle size distribution D90 of 22 μm are negatively charged by a paradigm generator, so that the surface of the particles has a uniform negative charge, and are transported to a high-temperature spheroidizing furnace through a micropowder conveying system, and the temperature in the furnace is adjusted. To 1600 ℃, the sintering process is com...

Embodiment 3

[0037] Raw material selection density is 4.75g / cm 3 magnetite concentrate powder.

[0038] (1) Choose a density of 4.75g / cm 3 The magnetite concentrate powder is used as the raw material, and the density is 5.1g / cm3 after grinding-classification-coarse and fine separation in the spiral chute. 3 high-grade magnetite concentrate powder; the obtained high-grade magnetite concentrate powder is filtered, dried or sun-dried, crushed and ground, sieved through a 200-mesh physical sieve, and then ground by a Raymond mill , can produce fine powder particles with a particle size distribution D90 of 16 μm.

[0039] (2) The prepared micropowder particles with a particle size distribution D90 of 16 μm are negatively charged by a paradigm generator, so that the surface of the particles has a uniform negative charge, and are transported to the high-temperature spheroidizing furnace through the micropowder conveying system, and the temperature in the furnace is adjusted. To 1600 ℃, the sin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
densityaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a micron-scale spherical weighting material by using iron concentrate powder as a raw material, and the selected density is ≥ 4.5g / cm 3 The iron ore concentrate powder is used as the raw material, and the raw material is ground-classified-sorted to obtain a density ≥ 4.8g / cm 3 The high-grade iron ore concentrate powder is crushed and air-flow classified to obtain fine powder particles with a particle size distribution D90 of 2-20 μm; the fine powder particles are treated with electricity and conveyed to the high-temperature spheroidizer by the conveying system The spheroidization is carried out inside, and the heating system heats the temperature to 1400-1800°C to melt the particles, and finally the micron-sized spherical weighting material is collected by the micron powder collection device, and the density of the prepared spherical weighting material is 4.8g / cm 3 ~5.6g / cm 3 , the particle size distribution D90 is 2-20μm, and the ball forming rate is >96%. It can be widely used in high-density and ultra-high-density drilling fluids and cement slurries in the process of oil and gas field exploitation.

Description

technical field [0001] The invention belongs to the technical field of preparation of weighting materials, in particular to a method for preparing micron-sized spherical weighting materials with iron ore powder as a raw material, especially suitable for preparation of weighting materials with a density of 4.8g / cm 3 ~5.6g / cm 3 , Micron-scale spherical weighting material with a particle size distribution D90 of 2 to 20 μm, which can be widely used in high-density and ultra-high-density drilling fluids and cement slurries in the process of oil and gas field exploitation. Background technique [0002] In recent years, as my country's oil and gas exploration continues to expand to complex geographical environments such as deep sea, deep wells, and ultra-deep wells, the demand for high-density and ultra-high-density drilling fluids and cement slurries has gradually increased. For example, the reserves of oil and gas fields in the South China Sea account for 1 / 3 of my country's to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/03
CPCC09K8/032
Inventor 许传华刘亚辉柳雷孙国权彭丽芬孙炳泉高春庆沈进杰
Owner SINOSTEEL MAANSHAN INST OF MINING RES CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com