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

Method for production of phosphoric acid and coproduction of alkaline fertilizer from phosphate ore and potash feldspar

A technology of alkaline fertilizer and potassium feldspar, which is applied in the field of comprehensive utilization of resources and chemical production to achieve the effect of improving overall value, diverse nutrients and simple process

Active Publication Date: 2013-12-25
KINGENTA ECOLOGICAL ENG GRP
View PDF4 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the literature search, there is no public report on the co-production of alkaline fertilizer with phosphoric acid ore and potassium feldspar

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for production of phosphoric acid and coproduction of alkaline fertilizer from phosphate ore and potash feldspar
  • Method for production of phosphoric acid and coproduction of alkaline fertilizer from phosphate ore and potash feldspar
  • Method for production of phosphoric acid and coproduction of alkaline fertilizer from phosphate ore and potash feldspar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Raw material 1: Phosphate rock, collection location: Weng'an Mining Industry, Guizhou

[0037] The chemical composition of phosphate rock is shown in the table below:

[0038]

[0039] Raw material 2: Potassium feldspar, collection location: Qiping, Guizhou

[0040] The chemical composition of potassium feldspar is shown in the table below:

[0041]

[0042] A method for producing phosphoric acid co-production alkaline fertilizer with phosphate rock and potassium feldspar, comprising the steps:

[0043] Mix phosphate rock: potassium feldspar: coke according to the mass ratio of 1:1:0.32. After grinding, pass through a 100-mesh sieve, add water to make balls, and calcinate in a blast furnace at 1350°C for 30 minutes to obtain slag and blast furnace gas;

[0044] The blast furnace gas is cooled by a normal temperature water bath in the phosphorus receiving tank to obtain crude phosphorus and most of the phosphorus sludge. The blast furnace gas that has been prelim...

Embodiment 2

[0049] Raw material 1: Phosphate rock, collection location: Jinde Mining, Guizhou

[0050] The chemical composition of phosphate rock is shown in the table below:

[0051]

[0052] Raw material 2: Potassium feldspar, collection location: Jinde Mining, Guizhou

[0053] The chemical composition of potassium feldspar is shown in the table below:

[0054]

[0055] A method for producing phosphoric acid co-production alkaline fertilizer with phosphate rock and potassium feldspar, comprising the steps:

[0056] Mix phosphate rock: potassium feldspar: coke according to the mass ratio of 1:0.65:0.26. After grinding, pass through a 120-mesh sieve, add water to make balls, and calcinate in a blast furnace at 1150°C for 120 minutes to obtain slag and blast furnace gas;

[0057] The blast furnace gas is rinsed and cooled by a three-stage absorption tower in series at room temperature to obtain crude phosphorus and most of the phosphorus sludge. The blast furnace gas that has been ...

Embodiment 3

[0062] Raw material 1: Phosphate rock, collection location: Weng'an Mining Industry, Guizhou

[0063] The chemical composition of phosphate rock is shown in the table below:

[0064]

[0065] Raw material 2: Potassium feldspar, collection location: Jinde Mining, Guizhou

[0066] The chemical composition of potassium feldspar is shown in the table below:

[0067]

[0068] A method for producing phosphoric acid co-production alkaline fertilizer with phosphate rock and potassium feldspar, comprising the steps:

[0069] Mix phosphate rock: potassium feldspar: coke according to the mass ratio of 1:0.92:0.30, after grinding, pass through a 150-mesh sieve, add water to make balls, and calcinate in a blast furnace at 1200°C for 90 minutes to obtain slag and blast furnace gas;

[0070] The blast furnace gas is cooled by a normal temperature water bath in the phosphorus receiving tank to obtain crude phosphorus and most of the phosphorus sludge. The blast furnace gas that has be...

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

No PUM Login to View More

Abstract

The invention relates to a method for production of phosphoric acid and coproduction of an alkaline fertilizer from phosphate ore and potash feldspar. The method comprises the following steps: burdening the phosphate ore, the potash feldspar and coke, grinding, granulating and calcining by a blast furnace to get furnace slag and blast furnace gas, firstly cooling the blast furnace gas by a water bath to recover crude phosphorus and phosphorus sludge, and performing dust removal on the blast furnace gas after cooling by the water bath to recover the phosphorus sludge; performing oxidative combustion on the crude phosphorus and the phosphorus sludge, and then absorbing phosphorus pentoxide gas by water to prepare the phosphoric acid; and performing water quenching, drying and grinding on the furnace slag to prepare the alkaline fertilizer. The calcination product furnace slag obtained by the method disclosed by the invention does not need to be purified again, and the absorbable alkaline fertilizer for crops can be obtained by simple water quenching, drying and grinding; the steps are simple, and the obtained alkaline fertilizer contains various and rich nutrients; by adding the potash feldspar as an additive and reactant, the alkaline fertilizer and synthetic ammonia can be coproduced during the production of the phosphoric acid, the various raw materials are ingeniously comprehensively utilized, and the integral value of the process is further upgraded.

Description

technical field [0001] The invention relates to a method for producing phosphoric acid and alkaline potassium fertilizer by using phosphate rock and potassium feldspar, and belongs to the technical fields of resource comprehensive utilization and chemical production. Background technique [0002] The industrial production process of phosphoric acid is mainly divided into three types: wet process phosphoric acid, thermal process phosphoric acid and kiln process (or blast furnace process) phosphoric acid. Wet process phosphoric acid refers to the use of sulfuric acid to decompose medium and high-grade phosphate rock to produce phosphoric acid. Thermal phosphoric acid refers to the production of phosphoric acid by burning, oxidizing, and hydrating yellow phosphorus in the electric furnace method. The phosphoric acid obtained by this method is of good quality, but consumes a lot of energy. Both of these traditional production processes use high-grade phosphate rock as raw mater...

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
IPC IPC(8): C01B25/18C05G1/00
Inventor 庞世花刘阳杨位红刘树光刘洪升
Owner KINGENTA ECOLOGICAL ENG GRP
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