阅读说明：本技术 一种低成本新型环保瓦楞原纸的制造方法 (Manufacturing method of novel low-cost environment-friendly corrugated base paper ) 是由 翟冬雨 蒋旭 陈务平 姚利军 李龙 于 2021-09-07 设计创作，主要内容包括：本发明公开了一种低成本新型环保瓦楞原纸的制造方法,涉及造纸技术领域,高炉炉渣经脱硫提纯处理后调质成对人体无害的矿物棉,碎浆机粉化后在贮浆池沉淀,与经过废纸破碎贮浆的浆池按15～20：80～85的比例进行配浆,采用阳离子淀粉1%～5%和非离子型助剂0.1%～1.0%进行搅拌,重新贮浆成池,通过脱水、烘干、施胶压平、卷纸等工序制成低成本新型环保用瓦楞原纸,纸板经定量、紧度、横向环压指数、平压指数、纵向裂长度、吸水性等指标检验,满足了客户的使用要求,改善了我国造纸原料不足的现状。(The invention discloses a manufacturing method of a low-cost novel environment-friendly corrugated base paper, which relates to the technical field of papermaking, wherein blast furnace slag is subjected to desulfurization and purification treatment and then is tempered into mineral wool harmless to human bodies, a pulper is pulverized and then is precipitated in a pulp storage tank, and the pulverized mineral wool and the pulp storage tank are crushed by waste paper and are mixed according to the weight ratio of 15-20: 80-85 percent of cationic starch and 0.1-1.0 percent of non-ionic auxiliary agent are mixed, the mixture is stored again to form a pond, the low-cost novel environment-friendly corrugated base paper is prepared through the procedures of dehydration, drying, sizing and flattening, paper rolling and the like, and the paper board meets the use requirements of customers through the inspection of indexes such as quantification, tightness, transverse ring crush index, flattening index, longitudinal crack length, water absorption and the like, thereby improving the current situation of insufficient papermaking raw materials in China.)

1. A manufacturing method of a novel low-cost environment-friendly corrugated base paper is characterized by comprising the following steps: the method comprises the following steps:

s1, separating the molten iron slag after the molten iron is tapped, sending the molten iron slag to a desulfurizing furnace, and adding liquidLime, Al₂O₃The blast furnace gas is adopted for heating, and harmful substances such as sulfur, impurities and the like in the slag are removed;

s2, making the processed high-temperature slag flow into a tempering furnace to prepare inorganic cotton, adding water into the inorganic cotton through a pulper for defibering, and storing the inorganic cotton in a pulp tank;

s3, the waste paper is used as a raw material to be crushed and then is put into a waste paper pulp storage tank to be stored, and the inorganic cotton pulp liquid and the waste paper pulp liquid are mixed according to the weight ratio of 15-20: 80-85 to form a new pulp tank, and stirring 1-5% of cationic starch and 0.1-1.0% of nonionic auxiliary agent to be used as raw materials for manufacturing corrugated base paper;

s4, dewatering the prepared pulp on a net through a circular net former to form wet paper sheets, dewatering the wet paper sheets to dryness of 40-43% through a three-large-roll-diameter pressing part after compounding, and evaporating the wet paper sheets to dryness of 90-92% in a front drying part;

s5, drying before, then sending to a surface sizing machine for surface sizing, wherein the concentration of the sizing oxidized starch is 6-8%, and further drying the paper sheet through a rear drying part after sizing;

and S6, calendering the dried paper by a calender, rolling, rewinding, wrapping, weighing and packaging, warehousing and delivering.

2. The method for manufacturing a low-cost novel environment-friendly corrugated medium paper as claimed in claim 1, wherein: the blast furnace slag for manufacturing the inorganic cotton comprises the following raw materials in percentage by weight: CaO: 30 to 45 percent of SiO₂：25%～40%，MgO：5%～15%，Al₂O₃：5%～15%，FeO：0.2%～0.8%，S：0.5%～1.5%，TiO₂: 0.50 to 1.50 percent, and the balance of impurities.

3. The method for manufacturing a low-cost novel environment-friendly corrugated medium paper as claimed in claim 2, wherein: the blast furnace slag for manufacturing the inorganic cotton comprises the following raw materials in percentage by weight: CaO: 32 to 45 percent of SiO₂：31%～40%，MgO：9%～15%，Al₂O₃：8%～15%，FeO：0.6%～0.8%，S：0.7%～1.5%，TiO₂: 0.90 to 1.50 percent of the total weight of the composition, and the balance of impurities。

4. The method for manufacturing a low-cost novel environment-friendly corrugated medium paper as claimed in claim 2, wherein: the blast furnace slag for manufacturing the inorganic cotton comprises the following raw materials in percentage by weight: CaO: 30% -42% of SiO₂：25%～36%，MgO：5%～10%，Al₂O₃：5%～10%，FeO：0.2%～0.5%，S：0.5%～1.2%，TiO₂: 0.50 to 1.20 percent, and the balance of impurities.

5. The method for manufacturing a low-cost novel environment-friendly corrugated medium paper as claimed in claim 2, wherein: the blast furnace slag for manufacturing the inorganic cotton comprises the following raw materials in percentage by weight: CaO: 33% -41% of SiO₂：26%～36%，MgO：6%～12%，Al₂O₃：7%～14%，FeO：0.4%～0.7%，S：0.6%～1.4%，TiO₂: 0.60 to 1.40 percent, and the balance of impurities.

Technical Field

The invention relates to the technical field of papermaking, in particular to a manufacturing method of a novel low-cost environment-friendly corrugated base paper.

Background

The corrugated paper is mainly used in the industries of food, beverage, cigarette and wine, cosmetics, food service, mineral water and the like, and along with the rapid development of national economy, the demand of the corrugated paper keeps rapid and stable growth. Corrugated paper boards are made into corrugated paper boxes through die cutting, indentation, box nailing or box gluing, the corrugated paper boxes are the most widely applied packaging products, the use amount of the corrugated paper boxes is always the first of various packaging products, and the corrugated paper has excellent use performance and good processing performance and gradually replaces transport packaging containers such as wooden boxes and the like, so that the corrugated paper boxes become the leading force of transport packaging. Therefore, the corrugated paper market is huge, the demand is short, and the development of the corrugated paper production technology has great significance for the subsequent development of enterprises.

Disclosure of Invention

Aiming at the technical problems, the invention overcomes the defects of the prior art and provides a manufacturing method of a novel low-cost environment-friendly corrugated base paper, which comprises the following steps:

s1, separating the molten iron slag after tapping the molten iron, sending the molten iron slag to a desulfurizing furnace, and adding liquid lime and Al₂O₃The blast furnace gas is adopted for heating, and harmful substances such as sulfur, impurities and the like in the slag are removed;

s2, making the processed high-temperature slag flow into a tempering furnace to prepare inorganic cotton, adding water into the inorganic cotton through a pulper for defibering, and storing the inorganic cotton in a pulp tank;

s3, the waste paper is used as a raw material to be crushed and then is put into a waste paper pulp storage tank to be stored, and the inorganic cotton pulp liquid and the waste paper pulp liquid are mixed according to the weight ratio of 15-20: 80-85 to form a new pulp tank, and stirring 1-5% of cationic starch and 0.1-1.0% of nonionic auxiliary agent to be used as raw materials for manufacturing corrugated base paper;

s4, dewatering the prepared pulp on a net through a circular net former to form wet paper sheets, dewatering the wet paper sheets to dryness of 40-43% through a three-large-roll-diameter pressing part after compounding, and evaporating the wet paper sheets to dryness of 90-92% in a front drying part;

s5, drying before, then sending to a surface sizing machine for surface sizing, wherein the concentration of the sizing oxidized starch is 6-8%, and further drying the paper sheet through a rear drying part after sizing;

and S6, calendering the dried paper by a calender, rolling, rewinding, wrapping, weighing and packaging, warehousing and delivering.

The technical effects are as follows: according to the invention, the blast furnace slag is subjected to environment-friendly treatment to obtain the mineral wool with high strength and excellent compression resistance, and the mineral wool is mixed with the waste paper stock slurry tank to prepare the slurry after being reasonably proportioned, so that a novel paper making technology is obtained, the resources of wood and waste paper are effectively reduced, the product quality is improved, and the sustainable development of the paper making industry is facilitated.

The technical scheme of the invention is further defined as follows:

the method for manufacturing the novel low-cost environment-friendly corrugated base paper comprises the following raw materials in percentage by weight: CaO: 30 to 45 percent of SiO₂：25％～40％，MgO：5％～15％，Al₂O₃：5％～15％，FeO：0.2％～0.8％，S：0.5％～1.5％，TiO₂: 0.50 to 1.50 percent, and the balance of impurities.

The method for manufacturing the novel low-cost environment-friendly corrugated base paper comprises the following raw materials in percentage by weight: CaO: 32 to 45 percent of SiO₂：31％～40％，MgO：9％～15％，Al₂O₃：8％～15％，FeO：0.6％～0.8％，S：0.7％～1.5％，TiO₂: 0.90 to 1.50 percent, and the balance of impurities.

One of the foregoing has been found to be lowThe manufacturing method of the novel environment-friendly corrugated base paper comprises the following raw materials in percentage by weight for manufacturing the blast furnace slag for the inorganic cotton: CaO: 30% -42% of SiO₂：25％～36％，MgO：5％～10％，Al₂O₃：5％～10％，FeO：0.2％～0.5％，S：0.5％～1.2％，TiO₂: 0.50 to 1.20 percent, and the balance of impurities.

The method for manufacturing the novel low-cost environment-friendly corrugated base paper comprises the following raw materials in percentage by weight: CaO: 33% -41% of SiO₂：26％～36％，MgO：6％～12％，Al₂O₃：7％～14％，FeO：0.4％～0.7％，S：0.6％～1.4％，TiO₂: 0.60 to 1.40 percent, and the balance of impurities.

The invention has the beneficial effects that:

(1) the invention has low manufacturing cost, the raw material of the inorganic cotton is blast furnace slag, which belongs to metallurgical waste furnace burden, blast furnace gas smelting used as cotton-making energy, chemical cotton production is carried out by the blast furnace negative energy smelting, and the industrial cotton has low cost;

(2) the sulfur and the calcium oxide of the blast furnace slag components belong to harmful substances, and a high-temperature separation technology is carried out through the physical properties of the substances in the cotton manufacturing process, so that a clean and pollution-free production technology is realized;

(3) the usage amount of the industrial cotton is increased to more than 5%, so that the usage amount of waste paper and wood is effectively reduced, and the carbon neutralization task amount of enterprises is increased;

(4) the invention adopts inorganic cotton pulp liquid and waste paper pulp liquid according to the weight ratio of 15-20: the proportion of 80-85 reduces the consumption of waste paper and wood, improves the physical indexes such as tensile strength, breaking length, ring crush strength and the like of the paper sample, and improves the quality of corrugated paper; (5) the invention adopts mineral wool for papermaking, has obvious product combination mechanism and simultaneously has the performance requirements of improving the fire resistance and moisture resistance of the product.

Drawings

FIG. 1 is a metallographic structure diagram of example 1.

Detailed Description

Example 1

In the method for manufacturing the novel low-cost environment-friendly corrugated medium provided by the embodiment, the blast furnace slag for manufacturing the inorganic cotton comprises the following raw materials in percentage by weight: CaO: 37% of SiO₂：37％，MgO：11％，Al₂O₃：9％，FeO：0.7％，S：1.1％，TiO₂: 1.2 percent and the balance of impurities.

The method comprises the following steps:

s1, separating the molten iron slag after tapping the molten iron, sending the molten iron slag to a desulfurizing furnace, and adding liquid lime and Al₂O₃The blast furnace gas is adopted for heating, and harmful substances such as sulfur, impurities and the like in the slag are removed;

s2, making the processed high-temperature slag flow into a tempering furnace to prepare inorganic cotton, adding water into the inorganic cotton through a pulper for defibering, and storing the inorganic cotton in a pulp tank;

s3, disintegrating waste paper as raw material, storing in a waste paper pulp storage tank, mixing inorganic cotton pulp liquid and waste paper pulp liquid according to the ratio of 17: 81 to form a new pulp tank, and stirring 3 percent of cationic starch and 0.7 percent of non-ionic auxiliary agent for making raw materials of the corrugated base paper;

s4, dewatering the prepared pulp on a net through a circular net former to form wet paper sheets, dewatering the paper sheets to 41% dryness through a three-path large-roll-diameter pressing part after compounding, and evaporating the paper sheets to 91% dryness in a front drying part;

s5, drying, and then sending to a surface sizing machine for surface sizing, wherein the concentration of the sizing oxidized starch is 7%, and further drying the paper sheet through a post-drying part after sizing;

and S6, calendering the dried paper by a calender, rolling, rewinding, wrapping, weighing and packaging, warehousing and delivering.

Example 2

The present embodiment provides a method for manufacturing a low-cost novel environment-friendly corrugated medium, which is different from embodiment 1 in that the method for manufacturing blast furnace slag for inorganic wool includes: CaO: 39% of SiO₂：29％，MgO：9％，Al₂O₃：7％，FeO：0.3％，S：0.8％，TiO₂: 0.8 percent, and the balance of impurities.

Example 3

The present embodiment provides a method for manufacturing a low-cost novel environment-friendly corrugated medium, which is different from embodiment 1 in that the method for manufacturing blast furnace slag for inorganic wool includes: CaO: 34% of SiO₂：27％，MgO：8％，Al₂O₃：9％，FeO：0.6％，S：0.8％，TiO₂: 0.9 percent, and the balance of impurities.

The results of the paperboard property tests of example 1, example 2 and example 3 are shown in the following table:

as shown in figure 1, through metallographic analysis and by adopting mineral wool for papermaking, the product combination mechanism is obvious, the fire resistance and moisture resistance of the product are improved, and the paper meets the use requirements of customers through quantitative, tightness, transverse ring crush index, flat crush index, longitudinal crack length, water absorption and other indexes.

In conclusion, after desulfurization and purification treatment, blast furnace slag is tempered into mineral wool harmless to human bodies, a pulper is pulverized and then is precipitated in a pulp storage tank, and the pulverized mineral wool and the crushed waste paper are mixed according to the weight ratio of 15-20: 80-85 percent of cationic starch and 0.1-1.0 percent of non-ionic auxiliary agent are mixed, the mixture is stored again to form a pond, the low-cost novel environment-friendly corrugated base paper is prepared through the procedures of dehydration, drying, sizing and flattening, paper rolling and the like, and the paper board meets the use requirements of customers through the inspection of indexes such as quantification, tightness, transverse ring crush index, flattening index, longitudinal crack length, water absorption and the like, thereby improving the current situation of insufficient papermaking raw materials in China.

In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.